It's not absurd at all. They know the IPs, they know those devices use the same network, and they also know where they are located pretty accurately: the Google Street View cars also scan for WiFi networks and map them to their location.
2 devices consistently connected to the same router, to the same network, in the same place... must belong to the same person or to 2 people sharing a home. If cookies set by other websites and seen by Google show similar browsing habits, it's probably the same person.
Whaaaaat the fuck?
I had no fucking idea of this. I've been seen "removed" used more and more on the last months and I just thought people speak weird online nowadays.
My lemmy.lm instance has been censoring content that I see without me knowing it?
Fuck this shit, I'm going to look for another instance right now. One that treats me like an adult who wants to see what other people type so I can decide MYSELF if someone is an asshole for using certain language