Most means at least 51%
We had a 7% difficulty drop last time and maybe another 10-13% this period which is hardly even 1/4.
So it's not true and it's not the end of Bitcoin.
LE
To get a better picture, the chain still has five times more hashrate than during the 2017 pump.
The miners also use worn equipment to make them lose money
It is necessary to keep pace with modern machines to make profit in the mining industry.