Highly doubt. If it did go down theres a few possibilities i think come afterward. These aren't mutually exclusive scenarios imo.
1. He tries sucking up to everyone he has snaked (to little success most likely)
2. Content Cop Anisa. This would probably be the biggest video of his career, not because anyone likes him, but it would be hilarious. He'd probably realize that his best shot at making money, albeit temporarily, is by airing out all of Pearnisa's dirty laundry. H3, Kino Casino, every commentary channel ever, all having a hayday and extra fat paychecks for a minute.
3. Alcoholic arc
4. He probably stops caring about politics (not like he forms his own opinions as is, no hand up his ass means no puppeting Pearnisa's ideology)
5. Eventually disappears (honestly best case scenario for him)
Ian is a somewhat unusual case because he's basically defined by Anisa as the long-term victim of her BPD black magic. He, very visibly, doesn't know what to do when she's not around and has been skinwalking as some profane mix of her and what he thinks she likes, which is not actually that uncommon for weak men lured in by the miracles of Insane Cunt Pussy. He threw himself away and has been something that he's not for so long that I think he'd snap if he suddenly didn't have something to mirror anymore. The fallout and mental strain would be so immense that I expect Ian, an especially weak loser, to be totally unable to bear it as he is now, so I think there's only really three possibilities here.
First (and depressingly likely) is the Idubbbz Troon Arc where he attempts to transform himself into Anisa and become a self-sustaining approval economy, similar to Cosmo's whole mental illness spiral. He escapes into delusions about his True Self and Self Discovery and Wow, After This I Will Be Happy! propatrana and reshapes his whole identity around chasing the dragon of not being the person who got broken up with and wasn't good enough. I find this especially likely if Anisa keeps him on the hook with "we're still friends!" bullshit, which I do expect her to do for a time, because she'd absolutely shower Ian with praise for letting her do his makeup and expose his inner girl and all that good, good virtue signal shit.
Second, the misogynistic rebound arc. This would require Anisa to go no-contact, because then, like Smeagol, the love of her ring will turn into bitter resentment at its absence and fester in his gut. Ian is a limp-wristed lily-livered faggot of the highest octane, and though he lacks a backbone he's shown a very deep capacity for spite and impotent anger, especially paired with self-destruction, and I can easily see it pivoting all the way around into manosphere-adjacent shit as his emotions boil over and he finds another role model to latch onto, especially if he believes for a second that it'll help bring back his old edgelord audience. An important piece of evidence to this is that spiritually, Ian is a catty bitchy woman, and there's nothing more catty and bitchy than upending your whole personality and identity to try to "win" a breakup, or to spite a co-worker you hate, or any number of other flimsy reasons that a cunt can change on a dime.
Third, and most drastic, is Ian just blowing his shit smoove off. Or more like ODing intentionally, because I think he wouldn't be able to pull the trigger on himself (literally or metaphorically). I would not be surprised if, for all the reasons prior, he just can't live without his husband Anisa, and feels too lost cut off from the person that he's allowed to define him. The whole internet would shrug for a day, and life goes on. Anisa likely doesn't feel any guilt or sadness but hams it up on some D-list Girls Talk podcasts to milk the last vestiges of fame out of his corpse, and tries to monkeybranch.