I still think the primary point is lost in all this.
Its not about whether or not players can adjust, we know they can. Its about how much time will they have to adjust.
I've never advocated a blind "get your balls on the 1st tee" approach. Its about taking time to experiment with different ball weights, spin, dimpling, etc and thru exhaustive testing to arrive at an "OK we think have a ball that's about right."
And then you hand out these balls months in advance of the season so the golfers play practice rounds with them, with hours and hours of range time. Maybe make a few tweaks along the way, and hand out balls again.
And then you draw a line in the sand and say as of Jan 1, 20XX, this is now the new PGA tournament ball for this year
But it doesn't stop there, you gather more data, see how far they're hitting them, with what clubs, see what kind of shots they're producing, etc. Then rinse and repeat the feedback/tweaking process in the offseason for the next one. Its not a static thing...and I suspect ball manufacturs are already doing this...