Clearly I need to step it up. I was (unsurprisingly) surprised at what I've observed they've managed to correlate. I run standard pi-hole, resist fingerprinting, and normally go through a VPN (mainly because I'm on public wifi half the time when travelling). I haven't logged into facebook in about four years, just did it for the first time today to see what's been correlated. Aside the mountain of irrelevant notifica…
I'll share my strategy.
On desktop:
Banking: Vivaldi Browser w/ privacy badger and ublock origin
Email and Commerce: Chrome Browser w/ privacy badger and ublock origin
News and other BS (like Hacker News): Firefox browser, always in private mode w/ privacy badger and ublock origin
LinkedIn (in the rare case I use it): Internet Explorer
Mobile:
Facebook: Opera
Commerce: Chrome
Reddit: Naked Browser
News and other BS: DuckDuckGo Browser
EDIT: I also do not use my credit card on my phone unless in extreme rare events. Absolutely no banking on my phone. No fancy apps (I use the web version where possible) beyond the generic stuff like email and maps. I use Signal for texting.