He also gave concrete steps on how to achieve that, and everyone got up in arms because those steps involved throwing Russia a bone so they can spin the peace as a win domestically.
Of course that's unpopular right now because Ukraine is winning the war and everyone wants to go with "let's push Russia out and hope they take it with dignity". But Musk has a different risk profile and would prefer de-escalation. And I'm not sure how you would deescalate without some concessions to both sides.
I wouldn't assume anything Musk tweets has anything to do with "risk profiles". He recently tried to commit fraud to get out of the Twitter acquisition, and when his lawyers told him it would go very badly for him he closed the deal. He is compulsively dishonest.
The New York times reports that Musk "suggested in a newspaper interview that China could be appeased if it were given partial control of Taiwan." You don't think he's trying to suck up to the Chinese government since he has business interests there?
Of course he's very good at inventing "plausibly deniable" motivations for his toxic behavior, but I wouldn't take anything he says at face value.
People are claiming he cares about free speech because he claims he does, which is laughable. He is suggesting free speech be taken from the people of Taiwan. And for realsies, not the "If I'm kicked off Twitter I'm oppressed" version of free speech.
I'm not sure that "try to conquer the country, fail, and still get to keep 20% of it" is the precedent that we want to set. But that's where "some concessions on both sides" is going to get you. (Concessions less than that - I presume - won't be regarded as "some concessions" by Russia.)