Nice collection! I keep all my old tech too. I think Motorola was my first too. I had the brick...
I miss the old flip phones. Honestly, if it wasn't for crypto, I'd probably go back to my flip phone. The novelty of carrying a computer around in my pocket is starting to wear off.
I don't think you can assume too much about previous faults carrying over
No doubt, they tend to fix issues pretty quick these days. A competitive market keeps them all honest too for the most part. It's in their best interest to get issues fixed quickly.