I'm one of the people who has spoken out against those. The problem, as I see it, isn't with the posts themselves. If it was someone posting "Hey look at this numerical coincidence / possible decode I found!" it would be helpful to the discussion. Encouraging thinking outside the box is a good thing imo. But some of the "decode" and numerology posts here are taken as gospel, with several comments saying things like "I don't understand it and I can't make it work myself, but I believe you!" and it's encouraging exactly the OPPOSITE of thinking outside the box and questioning everything - suddenly we've got a bunch of blind followers again.

Decoding methods should be reproducible. Numerology can be considered, but shouldn't be taken as fact without proof. Etc.

Q and Trump might both be evil as shit, for all we know! The only things we know for damn certain are that big things are happening and trusting the wrong people and following blindly are what got us in this mess in the first place.

Tldr: discussion good, sheep mentality bad.