I've had similar thoughts before, and I think it's our only hope. There's no way in Arceus's name that these games won't sell well, given the fact that Let's Go has already sold over 10M, but we can always hope for underperformance. And I do share the concern that this would just cause them to neglect consoles even more and focus on mobile, but I'm not too worried about that. There's little to no shared resources between the mobile development and the console development, and the main series games are, even in a worst-case scenario, going to be very, very profitable.
For the first time ever, I'm going to be rooting against a game's success. Big sales will just keep encouraging Game Freak to continue on with the downwards spiral. I won't judge anyone who chooses to buy it, I just hope few people do.