Most pro's prefer pretty much anything else. That being said, during a Fieldwork meeting with a table full of plumbers, one of the owners said he preferred installing Sharkbite stops on PEX pipe. He didn't mention what he was using inside the walls. I would expect that like most of us, he was using expansion or crimp fittings for that.
When I use a push fitting like that, it's mainly in an accessible location. Almost never hidden for me.
They are nice going from PB to PEX or copper.