I havent seen any direct replacement induction cook tops to replace the standard RV cook top/oven.
I have a portable induction burner which I love and use for long recipes and outside. I dont think I would replace my gas unit unless it enabled me to lose propane entirely, which it doesnt as I still use it for the fridge and heat.
Propane cooking is fine; change heat levels fast, etc. Plus on 30A sites now you have a problem.
Replacing an electric cook top is a whole different conversation. I would not hesitate to do that. I dislike electric cooktops.