EDIT: Apologies. Updated with a link to what gorhill REALLY said:
Manifest v2 uBO will not be automatically replaced by Manifest v3 uBOL[ight]. uBOL is too different from uBO for it to silently replace uBO – you will have to explicitly make a choice as to which extension should replace uBO according to your own prerogatives.
Ultimately whether uBOL is an acceptable alternative to uBO is up to you, it’s not a choice that will be made for you.
Will development of uBO continue? Yes, there are other browsers which are not deprecating Manifest v2, e.g. Firefox.
This was my poor attempt to mean “as an end-user.” I just love that it’s tied in to the Apple ecosystem and the UI is so much cleaner than other browsers.
I’ve tried to make the switch to others but they always feel very clunky. I love Firefox to death but it looks awful (at least on macOS). I’m not a big extension guy because I’m filtering DNS and IP traffic at the network layer — if we’re talking about ad blocking, tracking and the like it doesn’t make sense to only protect against it in the browser, as apps tend to send traffic to the very same domains as the websites.
I actually hate the trend of apps being nothing more than a wrapper around web applications. It comes off as lazy development, and I miss native apps (regardless of platform) instead of these creepy wrappers around web applications. So I actually have to agree with Apple there.
As for browser support, my team works on an internal-only app and our security policy doesn’t allow outdated browsers, so there’s no hard rules when it comes to browser support.