Honestly, yes, I would recommend reading anything you paste into a profile. Sourcer has options/settings. The options for Build all Citations are:
- Narrative plus Sourcer style inline citation
- Sourcer style inline citation
- Sourcer style source citation
- Inline citation using text on FS Sources page
- Source citation using text on FS Sources page
The results of two of those (3 and 5) can be posted in the Sources section.
Also, there is a reminder in the Sourcer settings that says, "NOTE: Some FamilySearch profiles have many incorrect sources - please check the generated citations."
On the whole, yes, you should be checking the things that you paste into a profile. Examine them before you paste them in or after you paste them in, but examining them is a good thing to do.
Auto Bio is not expecting inline citations in the Sources section (as there shouldn't be any there), which, I think, is why you're getting this problem. It's my fault for not anticipating this, and I will make a change to deal with it.