They're idiots. BTC loses money on electricity at this cost so it WILL go up within a fairly short amount of time.
"Bitcoin is expensive to make, so it's going to go up in price! Idiots!" Someone took off early from Econ 101, only got through the 'Supply' side of the lecture. Might want to go back and freshen up on the 'Demand' notes the smart people took while you were off spending your virtual millions...
Reading about 4k screens on 6" (or less!) phones has been *laughably* ridiculous, because even if I could reliably pump streamed content at max quality worth actually watching, it's physically impossible to tell the difference without shoving the phone in front of my face. Sure, if I were doing some kind of VR-style thing it might make more sense, but there is 0 reason for YouTube to serve me 90% of the videos I watch in 4k without corresponding leaps and bounds in the creation and distribution of that content. Hell, even for gaming, my 'enthusiast' PC gaming rig still can't reliably spit out compromise-free 4k content that I'm rendering locally, and unless I'm showing off, I turn down Ultra specs so I get smoother framerates and cooler temps.
To do nothing is to be nothing.