I only upgrade every 3-4 years, but there’s a lot of subtle differences that make it worth it. For example my current phone is far more reliable with Bluetooth connections than the previous one. It’s got a better camera with AI photo touching. It’s waterproof. Its fingering sensor is more sensitive and quicker.
If it’s a public place and you have legitimate business starting there for a while, I don’t see any issue with it. Eg. Doctors waiting room and you have an appointment, restaurant and you’re dining there, etc.
If it’s someone’s private home I’d ask first.