I find this bizarre and hard to believe even though that's what Wise are telling you. My Oz friend often sends me money (as recent as 3 days ago) from his Wise / Oz bank account to my Thai Krungsri account when he is here in BKK because he has no Thai bank account and no access to funds.
If the receiving Thai bank account is from Bangkok bank then yes this issue absolutely does make sense because they are a bunch of azzhats. I dont think Wise are telling you everything.
Do not listen to those who say you cannot do it on tourist visa. As some others have stated, you have to try different branches but one thing that will help is if you have a condo lease. Good luck
How is working as a DN for a foreign company taking work from a Thai?
The problem for the DN in Thailand is there is no long term visa option hence why this new visa is being proposed. There is sure to be many conditions attached to this visa if approved, and my guess is many DN will simply not qualify 🤟