as magic sugar said, might be useful if you want to work as trainer, for giving workshops and speeches, or outside film and games. If it's one of those "you have to renew it for a fuckton of dollars every year" scam-y things, I'd skip it. It just makes you look like you have no clue what to do with your money.
I think so if you do demo or workshop gigs at regional or international conventions, promote yourself as an AD tutor-for-hire (private, institutional or non-gamedev company), leverage for any career goals particularly when it comes to salary negotiations or contract. And if you're pitching to investors who don't have a…