True, I just found it convenient to block ads and trackers on a system level.
If you are using something like nextDNS it's very easy to block ads and trackers everywhere, and even block social media or adult websites and such.
So using DNS over TLS is not necessarily about hiding my internet traffic, but more also to limit unnecessary content. I suppose the same can be done with a combination of browser extensions. But using the private DNS made sense to me.