I mean the server was fun the first couple of times but after a while it gets boring, along with some hypocritical staff members who make futile attempts to make the server less toxic but endorse that kind of behavior on the server regularly (and as cheesepizza said, create double standards). I can understand both sides when it comes to whether you like or hate the server; especially with the overly dramatized playtime restrictions when it comes to playing guards, then after a while you just end up with like 2 guards and 20 prisoners. Most people on blockland genuinely enjoy playing servers that you can just hop in and understand how to play, which is why servers like roleplays and in this case; jailbreak are disliked. No one wants to head to their website and read a whole school essay on the do's and don'ts of the server.
If you like the server, that's fine, really. No one is stopping you from doing so but don't get triggered if someone dislikes it. It's really not a surprise for servers like it to be heavily despised among the community.