We've been around this loop on several occasions, that's a pointless question.
Personally I dislike the Spotify interface and its algorithms, I have literally no idea how it became so popular, but I also have no objection to it being available for you and I'm really happy that you like it.
Similarly I find Tesla's routing to be poor when compared to pretty much every routing app I have on my phone, I'd rather use almost any other one most of the time. It absolutely refuses to use one of the main roads in my area for some reason, which isn't a problem for me because I know where I'm going, but anyone who doesn't know the roads is going to take the most ridiculous route around narrow residential streets and I strongly suspect the problem is not confined to my locality.
So I'd like the option to use CarPlay if it's all the same to you, thanks.
You can't even complain that Tesla are diverting development resources to provide it in this case