Much of it isn't responsive to my actual question, but what is seems pretty good, and I'm grateful for it.
I don't appreciate the contemptuous, peacocking digressions, kind of like Linux USENET in the late '90s ("RTFM!!1"; "n00b!!"). I rarely post on forums, and I'd hoped the culture had matured. Apparently not.
As far as I've read, subq injection into the anterolateral thigh is fine, especially with a fatty thigh, as I have. Nothing I can find in published protocols for GLP-1 drugs mandates a specific injection site. Papers report that some patients prefer the thigh, with no shade cast on this site. From what sources I can find, thigh might yield slightly less/slower availability than abdomen, but the difference is regarded as insignificant.
If there are sources I've missed that indicate otherwise, I'd be curious to learn about them and change my injection site accordingly.