Entrusting our speech to multiple different corporate actors is always risky. Yet given how most of the internet is currently structured, our online expression largely depends on a set of private companies ranging from our direct Internet service providers and platforms, to upstream ISPs (sometimes...
Your ISP should have no insight in to your traffic at all. Therefore unable to make any judgement on what traffic to block and what not to block. With the exception of volume of traffic and to where it is going.
Although I do agree they should have no insight, I’d rather the insight they currently have be used to actually block sites from bad actors than just spying on you to most likely sell your data.