Unfortunately, Google got careless with the regular updates to the Pixel phones. On the Pixel 2 and XL, back in February, they introduced an interop problem with the wifi access points on a variety of home broadband routers, including those from some of the biggest ISPs here in the UK. The problem causes data stalls even though the status icon for wifi shows it connected with good signal strength. The only remedy seems to be to toggle wifi off and on, which makes it work for a while until it stalls again.
Regular updates are great until they break something fundamental like this. The fact that they are issuing the updates with breakages suggest their testing is inadequate. Google’s support on that ticket is non-existent, alas.
It’s been months (with their further monthly updates) and this still isn’t fixed. See https://issuetracker.google.com/issues/73336431 for lots of people with the issue.
Regular updates are great until they break something fundamental like this. The fact that they are issuing the updates with breakages suggest their testing is inadequate. Google’s support on that ticket is non-existent, alas.