Individual experiences will always vary with betas. Some people have run into more problems than others, while a few of my Samsung Care Ambassador friends have had relatively stable results so far. As I mentioned on your other thread, you can always revert your OS utilizing SmartSwitch on a computer. 🙂
No it's not. Also, the beta will not last 5 months. "U1" model number unlocked and T-Mobile S23s only.