I’ll hazard that most coaches are truthful, or at least truthy. They can’t overtly yank a player around because word will spread (in line with my thought that coaches rely on the grapevine). BUT, situations change. I’ve read about Cornell’s coach “rescinding” an offer but without a paper trail, it’s hard to tell if the player just heard what he wanted. It’s reported in the NESJ back in Dec-ish. And the player admitted to slacking so there’s that.
and h/t to @KeeperDad! I will have to go back and tag everyone.