If I were to run a shop - which I won’t, because I fear that is a lot of work - I‘d listen to what my actual customers say and put those things in stock they would happily buy.
Maybe I‘d even start selling coffee to those folks who just come by to have a chat about how awful my wares are as long as I find that amusing and it doesn’t hurt my business too much.
It seems the products in the shop are simply not targeted at the people who hang out in the forums.