A number of my personal sites end up blocked by corporate firewalls. It’s slightly infuriating. Even my own company. I got in a literal fight with IT needing to justify the why in why I needed access to my own website. Like I can live without it, but it’s nothing but my blog where I rant about tech. The why should be why is it blocked to begin with. The default state should not be blocked .
On a corporate network, it can make total sense to block non-business sites by default. As someone who used to help manage the proxies at a bank, some of the arbitrary decisions annoyed me (like blocking gTLDs of all sorts by default) but at the end of the day, it was an inconvenience. There were mechanisms to request access if needed.
To me, it starts to get more shady with behavioral analytics software on terminals that measure your known patterns of access and look for aberrations. It becomes intrusive and creepy in its move from "passive" filtering to active, personalized monitoring.
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All that is irrelevant here, because an ISP fucking with my TLS connection and throwing up warnings is awful.