I realise my initial comment could have come across as being accusatory towards UBports, I would just like to clarify that I don't think it is the responsibility of an OS to completely protect it's user from 3rd party trackers, that would be a logistical nightmare if it were even possible.
My position comes more from someone who is interested in Ubuntu Touch not only because it's a cool looking OS and that I like Linux, but as someone who wants to find a more private mobile OS, with the best thing I can use at the moment to achieve that goal being LineageOS (which is nice, but I would like to use something far less connected with Google by using something that isn't Android). Now I know I could opt for a feature phone, but I want a proper smartphone for the features it has. I know that some people see tracking in that sense as an inevitability, but I am someone who genuinely believes that you CAN have your cake and eat it.
(Also, usually someone brings up iPhones. I have a list as long as my arm as to why I hate Apple and will not use their phones, even if they are more private than an OEM Android ROM, which I don't use anyway).
I know that ads and trackers aren't always the same thing, and that if I don't see an ad that doesn't necessarily mean that I'm not being tracked. I just find them to be an easy way of gauging the potential level of tracking when I'm using a website. I know that even with good tracker blocking that there is still the possibility that some trackers have gotten through, I think it would be naive to think otherwise.
That all said, I do believe that trackers are a huge problem currently facing the tech world. I can see your argument about picking and choosing which websites to go to, and I'm not blind to the fact that I'm slightly hypocritical saying I take issue with tracking, but will happily watch YouTube. However, there are a lot of times where one can accidentally fall into a site that uses trackers without knowing that they are being tracked. For example, if I look up pictures of a car, find said picture and then go to the site to learn more, I could have easily stumbled onto a site which has now planted a tracker on me (usually a Google or Facebook tracker). THAT is why I believe that it is imperative for UBports to bring tracker blocking to the Morph browser (which should hopefully add it to all of the web apps, correct me if I'm wrong there).
With the web being how it is in the current day, I believe that ad/tracker blocking or the ability to have an extension made to do it for a browser is a necessity, a feature that should be included as standard. So, I'm hoping that soon this feature will become available for Morph, or when Anbox or Libertine begin to work on my phone, I will try an alternative browser like Firefox or Midori (and then hopefully create web apps through those browsers).
Once again, I would like to have my cake and eat it. I believe I have been able to achieve this for the most part with desktop GNU/Linux, I'm now hoping that the same can be achieved through mobile Linux OSs such as Ubuntu Touch.
Or I could just be wearing a tin foil hat...
Sorry for the essay lol