Right. DMs are famous for creating their own problems, then working hard to come up with solutions to the problems they've created. The game gets all wobbly and complicated and they often turn to the social contract to fix those problems (e.g. "no metagaming" or "play your ability scores").Hence my advice, “don’t worry about it.” We DMs have a way of working ourselves and each other into a frenzy over things that don’t actually matter nearly as much as we think they do when the dice actually hit the table. I used to think of metagaming as the cardinal sin of RPGs, the root of all roleplaying evil. In my defense, this was pretty much treated as common knowledge in the 3.5 and 4e eras that I was brought up in, and I never thought to question it. But then a funny thing happened during the 5e playtest. A lot of high-profile DMs started making the bold public assertion that metagaming wasn’t a big deal. I was skeptical at first, but eventually I decided to try letting go of my anxieties about metagaming. And not only did the game survive, it improved.
A better solution, in my view, is to not create those problems in the first place.