In my industry experience (have worked for web design firms, and currently work on a public app), designers just mimic what everyone else does and just put fluff all over the place to make it conform.
Very few actually focus on true user experience.
Those buttons have a place on a contact us page, but other than that they are filler
I had an addict friend hit me up for $10 and I didn’t know he relapsed and he died from the bad heroin he bought with that $10.
Point being, that’s prob the worst you can do with $10.