You should all understand that rewards are based on people trying to send ethereum. Less volume due to low price or people thinking we might be entering a bear’s market means less transactions.
In simple logic:
Less buying/selling of ethereum = low volume
Low volume = less transaction
Less transaction = less reward block
Plus to add that more people are adding rigs.
Makes mining difficulty more hard.
When i started at ethermine it was only at 70 Terahash.
Now its at 125-128 Terahashes.
Consider it the start of eip 1559. Rewards would be cut to nearly 30%.
and maybe by the end of 2021. Ethereum won’t be mineable anymore or i could be wrong.
Depends if the staking of eth would be successful.