Spencer doesn't have a lot of options. Look at what happened to Matt Heimbach (a contemporary of Spencer's, who was involved in various racialist groups and came out as an anti-racist in 2020, IIRC). If you go to his SPLC page, it treats him as if he is still an enemy, and
mentions in a single sentence that he apparently rescinded his views.
1) Become a fed. Occupy a position of being simultaneously hated by the left and mainstream, because you continue to talk like a radical, and also hated by anyone who shares your radical ideology, if they find out that you're compromised. The benefit to this is that you don't go to jail.
2) Become a born-again liberal. If he does this, he will be featured in a few media articles and features for a few weeks at most. When he's done with all that, he will be treated with suspicion and hatred by leftists.
3) Continue to occupy the same position that he has for a long time. This is not an appealing option for a guy who is losing interest and is already considered untrustworthy, but this is his best option for saving his dignity.
If Spencer thinks he is going to occupy a fourth option where he can continue to act like a James Bond villain but liberals will tune in to listen to his novelty takes, that's too bad for him.