Firefox Relay is a handy assistant to at least stymie email tracking and is neatly integrated with the browser. The free tier gets you a few masked emails that forward to your actual inbox. You can't reply through the masked email without paying, but that might not be necessary for all.
It feels like retaining some semblance of privacy is a losing battle. Data clean rooms are industry standard now and many companies happily share their bounties with others for profit. That appears to be the future along with consolidating businesses based on data-driven insights for demographics. How are these kinds of practices still legal? When does data collection and sharing become such a glaring issue that constitutional rights can be invoked in a landmark lawsuit? Or can we expect anti-trust suits to limit companies hoarding vast repositories of data?
It feels naive to ask these questions, but they're fundamental to societal health and progress, democracy, and arguably the planet.