That has nothing to do with how high or low fees are. Fees go up or down depending on network demand. But what actually more cost-efficient miners mean during the current period of "low profitability" in Bitcoin mining is, it will be harder for the less-efficient miners to profit or to break-even. They will either need to turn off their mining farms or migrate to a region where they could mine using cheaper electricity.
humans seem to be willing to take alot of abuse and then more on top of that. just so they can make a few bucks. that's going to be miners oneday...
everyone is going to be shitting on them and they will be barely breaking even. what a wonderful world.
1. hobby miners dont move/migrate home just to be profitable.. when the underlying bitcoin costs raise and the market lowers to where the market is down at the value support testing the new bottom.. those unprofitable miners switch off mining or move mining over to a crapcoin temporarily.. and/or then become market buyers of btc because its cheaper to buy coin than buy electric to mine it
Or because they're hobby miners, the incentives/profit are not their actual main motivators when the mine Bitcoin. They will probably continue mining at a loss, then wait until the price surges their operations back to profitability.
Plus some miners might be speculators too, including professional miners.
to me hobby miners are not professional miners contracted into mining as a full time task. they just play around when the time is right. they are more likely to jump to crapcoins that are sha-PoW when times are bad for btc profit. and market buy btc when its cheaper to buy coin rather then pay electric at a loss
hobby miners dont do business plans of a 2 year budget, prepaid.. hobby miners are more short term dipping in and out when the time is right
right now there are people living in the pacific islands (japan/hawaii) where electric is upto $0.50/kwh meaning their mining costs is upto $290k/btc if they mined.. so they are not going to mine but will happily buy bitcoin at any price below their mining cost (todays price -> up) because buying from the market is cheaper then mining.. they wont just "mine at a loss" as that is just bad math, bad economics
look at the specific electric costs per state/region/country and then do some maths on electric cost + hardware cost(2year lifecycle) and calculate each state/region/countries mining costs per btc and you will soon see who is a guaranteed market buyer and which countries drop in and out of mining due to the volatility this year of $50k-$75k market and then what countries are doing industrial electric cost mining where they can continue mining even in the $50k range of cost
the numbers will surprise you and educate you more into the sway of sentiment between miners and market buyers
also when you do the calculations of each country you start to see the measure of the max mining costs on the planet, where even the most expensive mining can mine if the price went high enough and would then cause even those market buyers to stop being market buyers where by all the buys would dry up and set the next ATH premium because everyone would then profit more if they mined so the sentiment switches
enjoy doing some math