Like a fellow poster said, that's easily manipulated, especially if the marketing of a VC-funded startup jumps on the train. My concern with this would be that you've arguably turned a nice free (as in freedom!), open-source-tool into a vehicle to push more or less proprietary and user-tracking code onto naive, unknowing users (though I guess that is not too uncommon in the anaconda-ecosystem you target - spack user and guix/nix-sympathiser here). Why make it a nagscreen (not sure about the extent of that), if you could just make it an option or a status message.

For me you're now just competing with every proprietary python IDE, which basically drops you of my list of tools to use or recommend (one can also use free PyCharm or VSCode or RStudio then, where you know, what you get...)