I've had the opposite experience. The "everything including the kitchen sink" DM's are usually the worst. Those who've got restrictions, as long as those restrictions seem well thought out, have generally been the ones who I've found to understand the game and its requirements the best.
These are the guidelines I'm using for an upcoming ToA campaign:
Scared homie?
Oh, hey, fair enough. We all have different experiences. Scared? Not really. Interested? Not in the slightest. You insist on using D&D Beyond. I don't have that program and have no interest in using it. So, your ad, presuming you would put that restriction up front and center, would mean that I wouldn't waste your time or mine asking about your game.
At that point, it has nothing whatsoever to do with play style preferences or anything like that, it's simply you have a requirement that I am not interested in reaching. Fair enough, we don't play together. Easy, peesy. We're both happy.
But, look at what @PM Ming claims about his ad - all he included was a play time and edition. Imagine how much time and bother he would have saved had he been a bit more forthcoming about what he wants in the game.
Look, I used to build groups using VTT's. It took me AGES to figure this out because I'm not the quickest bunny in the forest. At first I was like PM Ming and just say, "Hey, come and play D&D (3e at the time) at this time" and the groups were, frankly absolute




. They were terrible. And, as time went on, my ad's for "Player Wanted" became more and more specific and less and less polite. To the point of it basically reading, "Look, here is EXACTLY the kind of game I'm running. Here are EXACTLY the requirements. If you do not match these, don't even bother."
And it worked perfectly. My current group has been together for almost ten years now. Longest group I've ever gamed with. Been fantastic. So, yeah, when advertising a new game, you have to be VERY specific. After all, you're going to spend dozens, if not hundreds of hours with a stranger. You NEED to find out if you're compatible at the table before you start.