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.
Out of principle, I refuse to pretend I am not browsing with Firefox. 🦊❤️✊ Let website statistics show! And I will boycott sites that break due to not testing on multiple browsers!
That works until it’s your bank or credit card website. I cannot use Capital One’s (CC) “pay bill” any longer.
Change banks
Luckily it hasn’t come to that for me yet. But I have reported issues with my bank’s website to them, and it had been fixed.