My favourite one is how people try to come up with reasons for the /usr dir and why /bin and /usr/bin both exist. The original reason was that one of the original Unix devs ran out of space on their hard drive and needed a second bin folder for the new drive.

Or probe for its location Rather than hardcore one or the other

Everyone happy

Hrdcoded paths for things a program doesn't bring with itself, should be avoided in general. There is a reason $PATH exists and is easily extended. It is the users/admins responsibility to make sure envvars are set correctly, and it's the programs responsibility to give a useful error message when it cannot locate the programs it expects in $PATH

Other projects need to sit still so one project doesn’t have to change one line of code?

Nonsense. Keep up or get forked (that’s not a euphemism for vulgarity). It’s not esoteric magic like it used to be.