I don't think it extends the profile unnecessarily. A good citation enables you/a future researcher to go straight to the source. In my opinion, every bit of that paragraph is helpful.
"United States Census, 1790," Title, obviously
database with images, as opposed to a database without images. I trust sources with images more, as I can see for myself that the transcription is correct.
FamilySearch ([] : 14 May 2015 : site it was found on, with a link to the image and presumably date it was added to the site
accessed 22 Aug 2018), you already see the usefulness of this part
North Carolina > Mecklenburg > Not Stated > image 13 of 19; points exactly to the part we're looking at. This is particularly important in non-indexed work, like old probate court records, etc. But it enables a researcher to find this record again if the index is lost or unavailable.
citing NARA microfilm publication M637, (Washington D.C.: National Archives and Records Administration, n.d.). This is where FamilySearch got the record from. In the (admittedly unlikely) chance FamilySearch ever disappears, a future researcher will know this is a U.S. record and where to look next.
If a profile has a lot of citations, it can be difficult to edit around all the inline <ref>s. I tend to paste them under the Sources heading, and when I'm done with the bio, add the <ref>s in.
Sources are at the very end of the profile so I don't find it impedes bio reading. Just like a bibliography is at the end of a book or paper.
I do not like Ancestry's citations, especially from GEDCOMs. Those are a mess!