I actually hate using the internet professionally and have been working towards a future where I don’t need to rely on a social media presence for years now so I actually think I would fair well.
I have an agent who I communicate on the phone with who manages to get me advances on my work that are more than livable, my books are in hundreds of book and comic shops all over the world and my royalty checks can be pretty good, I (usually) do a lot of the big conventions and could transition all my networking to irl events (which honestly I have found to be more effective anyway).
I do use the internet for supplemental income but I could just pick up more work that my agent sends to me (the work I normally say no to) and it would honestly probably make me more money (though I would be suffering through some of it).
My comedy hobby is already something I have to do irl more than online since I’m still pretty early in it to be posting any of that online but honestly not having to think about how to post on social media would make it a lot easier for me. One less thing to think about.
I also live next to one of the best libraries in the states which is already an invaluable resource to me.
I do socialize a lot online but I probably socialize just as much irl. It might just force me to strengthen my local friendships.
All in all, I think I have done a good job of shielding myself in case something like that were to ever occur.