I suggest providing an alternative to "Investor Alley", maybe "Active Investing". That area would be for active investing discussion only, and not friendly to those who espouse passive investing there. Some advantages of doing this:
(#1) I know a few posters who don't visit "Investor Alley" much because they're more active, and don't like the atmosphere there. Myself included - I don't need advice about the same passive investments I've held for decades, but I'd like to discuss active investing somewhere
(#2) Certain topics are more appropriate for active investing, and could be moved there. Looking at the current Investor Alley topics, these might fit:
moonshot investments, ARCK/ARKW, low% of crypto, GME deathwatch, 1.25% margin loan rate, 10% active, tech-leaning index, returns risk with margin, volcano bonds, crypto bank, $10k you must invest, Tesla, growth companies, An experiment, ... (that's just page 1)
On another forum, they have an area for active investing where nobody is allowed to bring up the merits of passive investing. Posts that do are deleted. That's the only way to keep passive investors from spilling over to the new active investing area - initial deleting of posts, and for repeat offenders warning and then ban. Without this, it's pointless - it becomes just another part of Investor Alley, where passive investing spills over and stifles discussion.
You could argue Mr MMM isn't a fan of active investing, but I'm guessing he doesn't have much use for the "Mustacian and Single" area, either. I think separating passive investing and active investing could produce two areas that are each more focused. And as the list of threads shows, the interest is already there, it just needs a place to go.