Well so far I look smart.
https://diff.cryptothis.com/Latest Block: 677601 (5 minutes ago)
Current Pace: 92.3218% (226 / 244.80 expected, 18.8 behind)Previous Difficulty: 21865558044610.55
Current Difficulty: 23137439666472.05
Next Difficulty: between 21549868335542 and 22782233019867
Next Difficulty Change: between -6.8615% and -1.5352%Previous Retarget: last Thursday at 9:38 PM (+5.8168%)
Next Retarget (earliest): April 16, 2021 at 3:33 AM (in 12d 13h 6m 53s)
Next Retarget (latest): April 17, 2021 at 1:35 AM (in 13d 11h 8m 42s)
Projected Epoch Length: between 14d 5h 54m 50s and 15d 3h 56m 40s
...
Now it is early. But picture 3 huge cloud mining outfits.
With gear they built on the cheap (ie bitmain)
and they leased 70% of the eth gear they made along with 70% of the btc gear they made.
Why not lease all of it well power shortages and it lets them lose the edge since that 30%+30% is mining against their own gear.
instead they put out 70+70 and shift the unused gear to what ever earns more per watt.
ie they have 7 of 10 eth miners doing 3300 watts each = 23100 watts
they have 7 of 10 btc miners doing 3300 watts each = 23100 watts.
3 idle miners for eth
3 idle miners for btc
so they simply shut off either 3 of the eth miners or 3 of the btc miners and turn on the other ones.
So 3 x 270 usd = 810 usd for the 3 idle eth miners
or 3 x 40 usd = 120 usd for the 3 idle btc miners.
So my guess is they just shut off a ton of btc miners and turn on a ton of eth miners thus btc hash rate/diff drops 5%
lets look at eth hashrate/diff
https://etherscan.io/chart/hashrateonwards and upwards
" Highest Avg Hash Rate of 490,883.6004 GH/s was recorded on Friday, April 2, 2021 "
there is no way. that what I am saying is not happening.
hope they continue to do it.
As it helps with btc prices to go upwards
and packs down eth price a bit.
Since I am pro btc and anti eth it works for me.