"therefore there's absolutely no way prices of hardware and energy will return to normal until governments won't stop this nonsense." It will stop once the crypto prices reach parity with the hardware investments plus or minus further speculation.
Can you be more specific here? I see no mechanism for this to happen. Difficulty will simply increase from that point.
I believe they mean that once is gets to a point where crypto mining is no longer profitable (revs < costs) the demand for more powerful machines / tech will decrease