They aren't looking to avoid guns, they're saying that games are trying to force them in and hurting themselves by doing so.
Let me see if I can put it more… diplomatically. Take the original Thief games. When you go through those, you have to sneak around and silently knock people out. You can kill but it's not advisable. Running in with arrows blazing will get you a loading screen in short order. What they are saying is that it's getting to be impossible to make a game like that now. You can make one where that's an option (Deus Ex, Metal Gear Solid) but a game where you have to use stealth and patience, over and over again? No way.
Unfortunately, they try to say it's holding the entire industry back. That's too much, IMHO. It's the whole POINT of the shooter genre so that isn't being held back. It sure didn't stop the Serious Sam developers from making Talos Principle.
I can see it in a few games, though. I pointed out the Tomb Raider reboot. I've seen it in quests sometimes, too. It's like the developers suddenly realized that the player hasn't been in a battle for 20 minutes so they cram in a monster to fight. I can agree with this being a minor issue but I'm just not buying the scope the article tries to claim.