As someone who swapped to chrome > chromium > ungoogled-chromium > brave > firefox > librefox and then back to brave....? Idk, it feels like theres no such thing as a "perfect browser" and that all browsers has a some sort of "anti-consumerism" built-in that we are (still) not aware about.
The telemetry is a well known issue and can be disabled quite easily. I have no idea what you're on about with that second claim - maybe this blog post from 2 years ago? It's just an open recommendation directed at social media platforms. Nothing to do with the browser itself.
I was having issues with a web app after a Brave update, so I went to check the changelog to see what might have caused it. It was 100% crypto/nft shit in the change log.