First of all, bullshit. Bitcoin price alone has been profitable ever since it was at $1k or so, and yes hashrate has been doubling every step in move with the price, and it's still profitable now. This isn't even taking into account all the alts they're merge mining. Are miners trying to rake in some pity? Not likely. They're just trying to make it seem like they're less of the bad guys some of them are.
One could imagine that, because some miners will stop mining, the market will get flooded with BTC less quickly. This might increase demand because there's less supply. Who knows how all of this is gonna play out.
To be honest, I hope the entire market will show a slow upward trend again soon. This long bear move is tiring.
More or fewer miners will have no impact on the supply... Bitcoin will always be generated at more or less every 10 minutes, whether there's 1 miner like when it all began or thousands like they are now. Tired of the bear move? You've got to get more stamina into you.