We filed a complaint with the Washington state AG over their actions. HE's response was more or less technically obtuse garbage and, "You're not our direct customer" (paraphrasing, of course).
So what they did, was take it upon themselves to prevent access to an entire /36 subnet of IPv6 that our customer had announced downstream of us. Not once did an abuse report get sent to us, or our upstream from HE. Nor did we receive any credible abuse reports sent to us directly from those upset that the site exists. Meanwhile, this actually has no direct impact on the website in question's existence as their opposition has learned by now, it's never been truly offline. Just temporarily blocked from certain ISPs.
From an ISP point of view, it's worrying that a transit provider like HE can arbitrarily cancel a customer of yours, or a customer of a customer (, etc) over legal, protected speech. So, from a business standpoint, what does HE have to gain? The people complaining about the site aren't their target market, they're mostly Twitch streamers, Twitter personalities and folks who have a following on popular platforms that already exist. They're not the types to be self-hosting a streaming service who'll need rackspace and transit. So, what is there to gain by bending the knee to them? The safest business decision would be to remain neutral, respond to law enforcement requests if presented with one, and otherwise do the job you're paid to do. The worst business decision is moderating the content of downstream customers, which is what we're seeing now.