Yeah, Bluesky blocklists are ripe for abuse. Anyone can make them and promote them for whatever reason, and hundreds/thousands of users blindly subscribe to several when they first sign up.
Consider this a PSA for anyone using Bluesky: avoid using blocklists unless you know and trust whoever is running the list. I know at least one of the big "anti-right winger" blocklists floating around is run by a real piece of shit named brainnotonyet.bsky.social
who uses his list specifically to abuse women on the platform - him and his friends stalk and harass leftist women on the platform (while feigning being leftists/radlibs themselves), and then when any of the women speak up, they get added to a blocklist alongside a bunch of 4chan nazis, and then everyone subscribed to the list just stop seeing the victim's posts, even if they follow them.
It's actually a fantastic system if you want to build a social media site where you can serially abuse women and then completely erase them from the timelines of anyone who follows your banlists whenever they speak up about the abuse. Which, given the usual crowd that builds these platforms, that was almost certainly the intent from the beginning. Hell, that's literally what zuck originally made Facebook for