If, for any reason, you are unsatisfied with the new Minecraft 1.16.x, you can just drop in Minecraft 1.2.5 R5.0 from 2012 instead, and enjoy the legendary ChatControl Free like you'd in the good old days! Yes, we do support that version.
-Matej

ChatControl™ - The Ultimate Chat Plugin [500,000+ Downloads] [1.2.5 - 1.16.4] 5.9.1
The legendary chat plugin. Incredible solution for ads, swear, caps, spam, bots & more!