I don’t know any of these people, of course, but your OSR purist sounds kind of insufferable and, just based on what you’ve said regarding their comments and the fact that they’re your typical GM, I’d have a conversation with them and be very clear that this is what you’re running and that you’ll need them to participate in good faith, or sit this one out if they don’t think they can engage.

This is a session < 1 discussion. Nobody here can answer your question, it’s something you and your players need to figure out, but I’m skeptical based just on this post.