This has been discussed numerous times.
It comes down this forum (like most) is all in plain text.
It's tough to discuss technique in plain text. It's tough to explain how to play something in plain text. If we were all in the same room it would be easier to discuss such topics because we could show one another what we were talking about. But we're not all in the same room.
On the other hand, it's easy to discuss gear in plain text.
So it's natural topics that are easy to discuss in text get more attention than topics that are difficult to discuss in text.
This forum has everyone from absolute beginners to touring pros. We are all drummers here, no one is here to one up anyone up or judge. And besides, lots of hobbyists are here to have fun, not be the worlds greatest drummer.
And the other aspect is technique is something best discussed with a teacher. Many posters here teach. One person who used to post a lot on here told me in private they get paid to discuss these things with their students, so why should they post about it on this site for free? I don't necessary agree with them, but I respect their position.
I can show someone how to do a double stroke roll in person, but could I explain it in text? Not really. Can I discuss in text the difference between various drum kits? Sure. So I have way more posts in the gear section.