YSK: Lemmy browsing app Boost is tracking your data for profiling and more! Consider using other trackingless Lemmy apps such as Jerboa or Voyager
I am not either lol, and the web browser tracking you suggest is a decent possibility.
I too use it, I was curious as well and it seems (having installed duckduckgo because of another comment on this post) that there is tracking.
Given lack on maint I guess will look elsewhere regardless