Attention to details and facts is our only hope. And we have no reason or need to rush a judgment or decision. I will note again that the profile managers of Daniel Carter may not be aware that the statements of ancestry regarding Roosevelt and Oswald are currently not supported because a different Thomas Carter has been attached.
Statements that were used to discount the Thomas Carter (1725-1774) who is the gateway ancestor were largely based upon information from an adjacent will recorded in a will book that have turned out to be clearly unrelated in anything other than the time sequence in which they were recorded.
Regarding other matters just raised: When Daniel Carter died, Thomas Carter (1725-1774) was 34. At that age, it is not at all improbable - and I would say is highly likely - that he had already started his activities related to being a planter. (He also referred to himself as Esquire in his will, which is something in common with his highly probable father, Daniel Carter). Therefore, it would not be unreasonable for him to be recognized as an investor (commissioner) in St John Parish within a short time period (please see also the below footnote 2).
As is described on Thomas Carter's profile, he had land in Virginia, South Carolina and Georgia at his death. None of that is inconsistent, and is in fact consistent with him exerting influence within a year of his father's death. He also made provision (or the executors agreed, post mortem) that the land that he owned on Newport River, upon which his daughter was living, would be hers. A geographic proximity might be able to be established if we can determine which "Newport River1" it is that is referenced, but the other mention of land does include South Carolina (and Virginia).2
I would also note that the "Colonial Records of Georgia" citation regarding Thomas Carter being appointed Commissioner for St John Parish is tertiary reporting, which is why I put it in the Research Notes section, as opposed to the biography. I will attempt to locate the cited material.
With the other Thomas Carter who is in contention I am concerned that he is already attached to Daniel Carter, despite inconsistent DNA evidence, and no sources that directly link him to Daniel Carter - with the exception of very good onomastics (then again, several Carter lines were in the Virginia area at the same time). The reader may note that Thomas Carter (1725-1774) has in his profile a direct mention of Daniel Carter as his father, but he has not been linked (at least not by me) because the references that have emerged thus far are just vague enough that a possible other Thomas Carter might be a better match on identity. However, given the extent of success of Daniel Carter as a planter and the success of the Thomas Carter who died in 1774 and had significant land holdings across three states? I think that might weigh in his favor in terms of establishing a connection.
I am not sure what evidence might emerge that will tip the scales toward either Thomas Carter, but I do not think that we have anything ironclad for either Thomas as a descendant. Competing theories on origins ought to be thoroughly examined and ruled out (for example, I examined the evidence on James Carter as a possible father of Thomas, and found limited data and nothing that would rule James Carter in as a clear parent of Thomas). At minimum, if the competing Thomas Carter is to remain attached as a son of Daniel in the interim, his relationship with the parents should be marked as uncertain.
1 I give and bequeath to my Loving Daughter Anne Oswald one tract of Land on Newport River containing one hundred Acres, whereon she now lives, to her the said Anne Oswald and her heirs for Ever. (The said ~Will satisfied as such Given by my Hand the 14th day of March 1774 J:Wright.) [apparent codicil date, on the reverse of page 1, as the probate/recorded date was 17 Mar 1774 - refer to the profile, or for the facsimile: (Carter, Thomas) Wills, Colony of Georgia, RG 49-1-2, Georgia Archives]
2 I give and bequeath unto my loving Sons Hepworth Carter, James Carter, and Charles Thomas Carter all my Lands in the Province of Georgia consisting in the whole of about Eighteen hundred acres more or less. . .
Addendum:
I have been able to validate a few of the Colonial Records of Georgia citations that a website blogger had provided. Also confirmed that Thomas Carter was recognized as an Esquire. Lastly, the Newport River appears to be what is now called North and South Newport River - North being in Georgia (didn't look at south), in Liberty County; so that's the most probable location where the Oswald daughter was living.