Trigger Warning: This thread will include words that may be offensive to some.
Chat and commands need an increased time limit in-between messages. Also, enforcing a basic chat filter--only banning derogatory words such as "N@GGER" or "F@GGOT"--would not hurt anyone and only make it harder for trolls to join and spam. Obviously yes, they can be easily bypassed, but nothing else is being done to prevent these raids other than admins just sitting in-game and continuously banning. As time goes on, that chat filter can be improved to better filter out attempts of bypassing it. I do not see it being easily bypassed as a valid argument. We continue to ban people despite it being easy to bypass a ban.
Admins cannot be relied on 24/7 to stop these raids. It gets even worse when the spamming is being done from Hub using /msg. Due to the lack of permissions admins have in Hub, they essentially cannot do anything until a hub moderator comes on (which is also really dumb, but unrelated to this thread).
Popular servers, such as Hypixel, wouldn't have a chat filter if it didn't work. Just imagine Hypixel’s servers with a ton of admins just constantly banning people and clearing chat because they decided that a chat filter was too easy to bypass.
Here are some examples of something that could be EASILY prevented if we enforced a BASIC chat filter. Nothing crazy.
Screenshot by @"Alco_Rs11"#91