Those two are enormously different, though. I'd consider myself an advocate, just as anyone who believes in a fair and free democracy should. But I am very far from being an absolutist — and I have a secret suspicion that nobody actually is. Musk certainly isn't.
Next is misinformation and tomorrow you wonder why you cannot state your opinion anymore. A cycle that has been repeated ad nauseum. It just isn't a smart solution and causes more problems than it solves.
Maybe the biggest challenge is defining what constitutes "spam." While some cases seem clear-cut (e.g., repeated identical messages from bots, malware, phishing), others are quite subjective. Subtle marketing? Aggressive marketing? Repetitive but sincere advocacy for a cause? Repetitive but insincere trolling? Repetitive but sincere trolling?
All this seems rather obvious, so I was kind of surprised to see how many people bought into Elon's vision for Twitter, it was never workable.
That said, I agree the government probably shouldn't be involved here for the most part (slippery slope, government is a blunt tool, etc.). As long as your "speech" isn't actually harming someone (harassment, revenge porn, incitement, etc.)
As long as we're defending scoundrels it's worth remembering we already lack so many protections for non-scoundrels. In a lot of states you can be fired if your boss hears a whiff of collective bargaining. But I digress.
That there are limited worker protections in countries is a different problem, but is certainly not inhibited by too much speech, quite the contrary it would worsen the situation further. Civil liberties never suffered because too much speech was allowed, so the perspective to err on the side of freedom is only logical.
> there is simply no debate to be had about the basic humanity of certain classes of people
That is just an invalid generalization.