You should know by now that ETH mining rewards are VERY difficult to predict. At first I assumed that we would stay in the $2K area and gas fees would be in the average ~100 Gwei area and the complete opposite happened. The price went up 50% but the fees are down to like 25 Gwei on average.
Looking at the hashrate it still is going up almost exponentially and now we know the reason due to those upcoming ASICs, a few months ago we would of never assumed this. This is why don't try and predict the amount you will make per day with ETH, its way too volatile to predict.
What you said. The miners were making record profits in March-April due to the atrocious gas prices. Gas fees on top of block rewards are what got the rewards so high.
In the last week the gas has been the lowest in quite some time. Lows of 20-40 gwei on weekdays!
See for yourself:
https://www.gasnow.org/I see 2 reasons for the low gas fees and ipso facto “downed” block rewards:
1. Sidechains or alternate chains like Polygon or BSC picking steam until the Ethereum chain sorts things out
2. Ethereum in its current bullrun is too valuable to be wasted on fees of a contract where the monthly returns were equal to deposit+withdrawal gas fees. People find it better to hold the coin instead of losing 0.05 ETH fees interacting with a contract that gives 0.5% APR per month
but if you are mining for fiat or btc you are getting more than 10 cents a mh due to price rise.