I guess that depends on how smooth your blutooth interfacing is. For bluetooth speaker's I've had , pairing means holding a button on the physical speaker and waiting for the phone to show up because for reasons the old connection listed on my iphone no longer works. This happens with my mac and a blutooth mouse too. sometimes I can't connect to it right away, I need to go through the discovery and pairing process again. the system in the car is junk too. It connects and starts playback automatically, but you have to manually press play on the car's stereo head unit to start getting sound from the device versus just the title and time info on the car's headunit screen.
I'm glad this system works for you but for most things I've had the pleasure of using blutooth with, it's been awkward and clunky and slow compared to just grabbing a plug and shoving it into a hole and getting sound immediately, so I prefer the tried and true cable methods whenever possible. Nice that they are so much cheaper too. You'd probably get better sound for your money buying a vintage stereo than a modern one with bt shoehorned in.