Are preview packages reliable for future use? (e.g. Localization)

Hello,
I’m kinda new to unity, I want to use the Localization package which is in preview state at the moment. May support for this package end in the future?
Bugs and current problems aside (in terms of reliability), if the support ends or the package never goes into a release state, can we use these preview packages forever with our project? I.E.; can I use it with Unity’s upcoming 2022, 2023,++ versions? Is it version-independent and future-proof? (of course, I’m including the versions after the minimum version requirement)

I generally prefer to use Unity’s own solution if there’s one.
For this instance, would it be more reliable to write my own Localization system to stay future-proof?

I would say that generally, nothing is ever future proof in software. We certainly wouldn’t ever want to end support on something unless there is greater good to come out of it.

You may want to gauge other users opinions around one or the other.