This is the motte argument to the OP's bailey, which is not so limited in scope. This obvious and hard to disagree that if someone is currently running a D&D game and asks for help to do a sideline in that game, recommending to switch to other games is unhelpful. Very solid, very defensible position. But, the OP actually complains about being recommended other games at all, even when asking input for a new game start, because the assumption is the OP wants to play D&D. This is much less defensible and quite silly. Whenever this is solidly challenged, though, the retreat to the motte usually follows. And, now, the motte is being oresented as under attack, when it isn't.