I’m quite old already, from times when the first computers still worked with punch cards that I saw the first time when he did military service. Naturally I know the old Opera, it was the first useful browser, until in the end it was sold and distorted by the Chinese. Vivaldi is a successor, pursuing the same original philosophy and I agree that it is not a browser for everyone, there will always be a browser for a certain advanced audience, professionals, students, researchers, etc., to which it really comes from pearls with its functionalities, but to use it only to read the mail, post on some social network, well it is something oversized, for this certainly serves any other browser, even the simplest, such as Min or Fifo, with search bar and little else. As I said, it depends on the needs of each one.

Regarding uBO, if it has some advanced functions, apart from an integration in the contextual menu, which the Vivaldi blocker (yet) does not have, although it also does its job well, since it also allows you to add the filters you want. No browser with and without an app can do what TOR does, but this is because it does not work like a normal browser, naturally protects against fingerprinting, but on the other hand lacks other protections and functions, it is good for browsing on the onion, but many got an unpleasant surprise to do it without before using a VPN and being completely exposed. Surfing the open web with TOR seems to me to be a bit desperate.

Trace does its job well by randomizing fingerprints and blocking other identification and tracking methods, cryptominers, header, CSS, pixel, fonts, etc. Although you have to look for a balanced configuration, since activating all the protections, prevents the operation of some pages, even when you add too many filters to the uBO or the Vivaldi blocker, which can also break some pages.