As long as the price stays below what is profitable to miners, there is a deficit adding up. Yes, at 400 sat, that deficit is, as you have correctly identified, growing at a MINIMUM rate of 0.72 BTC per day.
You are also correct in that 0.72 can withstand today's coin production.
But miners didn't get paid yesterday, or the day before that, or the day before that. From the miner's perspective, traders owe them a ton of BTC right now.
I believe the majority of miners absolutely HATE (or should hate) Nicehash because of this situation which inflates mining costs and difficulties unnaturally and unfairly, spooks investors, and destroys fair trade.
We can't ignore this and pretend like it doesn't exist and then go "WTF just happened" when a good idea fails because the market crashed. It seriously needs to be addressed. The longer investors sit around and let the debt accumulate, the higher the breakout mark gets and the more doomed the economy will be.
It hasn't gotten too far away yet. It can still be corrected. But it'll never happen as long as price suppression occurs against high coin production rates.
Your line of reasoning is valid, but you are operating on a flawed premise which is that all miners are following this line of reasoning. They are not. Lots of miners, especially small time hobby miners, don't pay attention to any of this. Also, worrying about a "miner's debt" is pointless because the mining costs are constantly fluctuating, and we can never know if coins sold one day were mined that day, or the previous, or last week. It is a number that is impossible to ever get a reliable estimate of.
Trust me, obsessing over the minutia of the dynamics between mining, market, and price at this stage is not going to get us anywhere. Hell, obsessing over price PERIOD at this stage is not going to get us anywhere. Plenty of successful coins languish in obscurity for far longer than TRUMP has. The price/time graph line not moving upwards at all times does not mean the sky is falling.
spooks investors, and destroys fair trade.
I quoted this specific phrase again because it is important, and ties back to the reasons I was against suddenly (and severely) slashing the coin supply. Investors and traders get spooked when they don't have the necessary information to base their trades and investments on. You said it yourself, buy support dropped AFTER the reduction in coin supply was announced. Smart investors and traders saw the volume and interest in the coin, and put in low buy orders because they wisely calculated that 180000 new coins were still coming in every day and they could catch some dumps. When that changed all of a sudden, they said fuck you, I'm out. Fair trade and investment is destroyed by sudden and drastic changes in the coin supply, because smart traders and investors are going to base their decisions partially on how many new coins are mined each day.
The issue of the coin supply and whether or not to change the specifications should not be put on the back burner IMO. This should be priority #1. It doesn't matter if the fork wouldn't occur for a month or two, because investors, traders, and miners should have plenty of advanced notice if we are to call it "fair" with a straight face. If the reward reduction is to proceed smoothly and regularly over a period of multiple months, it MUST be done by block 36,000 and we are well over block 14,000 already. I say block 36,000 because that is the block at which supply will hit 10,000,000 TRUMP (counting the premine). If we cross that mark and the reward is still 250 TRUMP, then the reward reduction will need to be over 50% or the blocks will need to halve at intervals faster than every 36,000 blocks if we are to keep the max money supply at the currently stated 20,000,000 TRUMP. We should avoid this because no one here is clamoring for increasing the max coin supply, and rapid and sudden reward reduction is exactly the reason I and others opposed the previous changes.