My approach is similar to yours. I also take the step of using services I'm persistently logged into in different browsers than the one I do my general browsing

My approach is similar to yours. I also take the step of using services I'm persistently logged into in different browsers than the one I do my general browsing in. I also share your concern that my (lack of a) footprint makes me an outlier, and thus inherently more interesting to an adversary with the power and reach of No Such Agency. There's precisely zero I can do about that, without compromising my local objective of not being followed by every damned website, though, so I just carry on.