They have stability issues that manifest themselves as bad connections, poor rendering, slow responses, and dropped connections.

Yeah, you know what's funny? The built in systems have these problems even worse, which is exactly what drives people to use the phone based alternative instead.

And when CarPlay and Android Auto have issues, drivers pick up their phones again, taking their eyes off the road and totally defeating the purpose of these phone-mirroring programs.

Okay, and somehow using the built in ones, which always get cheaper hardware and less development resources, which always perform much much worse, doesn't cause people to pick up their phones?