Chromium-based browsers are being “infested” by Instart Logic tech
which works around blockers and worst, around browser privacy
settings (they may start “infecting” Firefox eventually, but that
is not happening now).
Okay, so they have cookies on a subdomain of the main site's domain. But that in itself is not a problem, since it does not enable them to track me across websites. So I don't have a problem with that, unless they use other tricks. Are they using browser profiling or something similar to correlate across websites?