No, but "spam" is subjective and while you can decide that for your own instance, doing it for a bigger instance on behave of your users seems a bit overreachin

No, but "spam" is subjective and while you can decide that for your own instance, doing it for a bigger instance on behave of your users seems a bit overreaching...but luckily I can just move to an instance where I agree with the rules or host my own.