It's not the difficulty of the game, as much as it should be his "I'm in a financial crisis guys! I need to keep my house and keep playing games!"
His multi-game marathons aside; he was getting plenty of questions about when Luigi's Mansion 3 was going to happen. Actual questions, not his "A lot of people were asking" shit. If he wanted to make money, he could actually play something his fans wanted to see, and he didn't seem to bad mouth as much as the other games in his marathon. He didn't like Bloodstained, Visage, Stalker, or... that other game, the 2D Dark Souls thing; but he seemed to enjoy (if only tolerate) Luigi's Mansion 3. His fanbase wanted it, he didn't seem to hate it, fucking money. Big business man can't put 2 and 2 together and find out it makes 4.