“Can” and “will” are two different things. I do realise a motivated enough spammer can’t be stopped with rate limits, just like a motivated enough burglar can’t be stopped with a fence and an alarm system. Still, the effects of prevention are there, even if not immediately seen. bastiat.org/en/twisatwins.html

I never understood the argument that because there are other loopholes for bad actors, let’s just break the whole thing.