I find it crazy only about 50% of customers run PHP8. That was released 3.5 years ago 🤐 Compatibility issues (a lot of extensions got deprecated and no longer are supported on 8.0), or shared hosting that still defaults to 7.4.
Well, not according to this thread apparently? And I've got it running on 8.3 now, but I haven't gone checking in detail if there are any issues in the background that are not readily apparent.
8.3 should be okay. There may be “deprecation noise” but a bunch of that stuff will have been resolved and a bunch of it will only be present if debug mode is enabled. In any case it can be safely ignored.