Why does that matter though? Shouldn't we as players respect our fellow players and come prepared far as is possible and practicable. If you agree that it would make the run objectively easier even if by an insignificant amount if the effort to reach that baseline is far less then doing a job quest for an ability why not do it? Maybe I am just naive and you are in the right and treating people with respect does not matter since end of the day it gets done and that in itself is respect enough.
When you were running your level 20ish dungeons for the first time with vendor/crafted gear back in the day (so like, before Hall of the Novice), did you make sure it was fully pentamelded with the best tier 1-2 materia possible?

If not, then you're just a hypocrite and weren't giving your best to your parties either.