L5 support has been available in a number of devices for a couple of years now. Garmin was one of the first to use L5 in commercial devices, with their Fenix watches a while back.
The phone I'm currently using, the Pixel 6 Pro uses the L5 band. It's nice and I can definitely tell a difference, but it still struggles due to antenna size.
In my experience, for people doing significant outdoor stuff like backpacking, endurance running, etc, a positioning device from a solid company like Garmin is going to be a good bit better than an apple, Samsung, Google, etc device.