As a post-social media accelerationalist, the utter chaos that would result in social media platforms' inability to combat spam would devolve into the inability to exist at all and should be welcomed. Social media's negative externality is our individual mental health. One of the greatest things we could do for our mental health would be a complete and utter implosion of uncensorable social media. It cannot come soon enough.
I mostly hate social media. But we'd also lose useful things. Such as the discussion board we're currently on. Or the treasure trove of educational and funny content on YouTube. Watching puppy videos is amazing for my mental health. It would be a shame for it to be drowned in spam.
It would honestly be better for me if social media categorically ceased to exist. Before anyone responds with, "You could choose not to participate," what I mean is that if they ceased to exist it would increase the supply of the attention and time of others. When I'm competing in time and attention for others with the likes FB/IG/TT I'm simply at the loosing end. I don't have a team of PhDs whose goal it is to increase people's engagement with me - they do. If I have to compete at all, I'd much rather compete with other people - not against professionals.