I mean short and long term there’s pros and cons to that. however there’s a reason why that started to fall appart with e-mail. In short if it gets popular, than hosting servers with no throttling or post limits means spammers are going to go crazy, and rather than play the never ending unwinnable whack a mole game as bad actors create thousands of instances a day, hosts of any instances worth targetting will have to do a “instances are assumed malicious until proven benign”, (IE a whitelist method)