Hmm okay that's interesting. I think I may have input something incorrectly for my vehicle the first time because now it's saying the one I was looking at will work (Pioneer DMH-WT7600NEX). So I guess all of the ones on that idatalink maestro list are ones that have climate controls built into their software? If I'm looking at this correctly now it's definitely not as bad as I thought it was going to be.I did a quick search and one avenue is https://www.idatalinkmaestro.com/en/compatible-products/radios
Apparently the idatalink maestro plus a compatible radio allows you to get a new head unit and keep the AC controls.