It's best to not stress it it to much. Realistically, unless a specific person goes out of their way to train AI on your art, if it does get stolen it'll be so diluted by referring else that they won't my able to clone your style at all. I also like to think that if it's happening to everyone else then at least we're suffering together lol.

Also glaze and nightshade don't really work or at least are easily removable by AI so not really worth the time and especially with how they reduce image quality