You are right. Miners should turn off if they are unprofitable. 
My concern is about the effect of an eventual hashrate drop, marketwise. 

AyCaramba

bitcoin

Btc fees

>Question is this: Is it possible that miners are strugling with bills, to the point they want to keep a big mempool (creating/bumping txs themselves and sharing the correspondent fees) so actual real transactions have to pay a bit more fees (more than 1 sat/vbyte). I mean, in order to keep hashrate?

If miners are mining at a loss, then they are doing a disservice to bitcoin. If a miner is only mining $8 of bitcoin for every $10 worth of electricity they consume, they should throttle down or even shut off their mining hardware and divert that $10 toward buying until the price recovers to a level where they can mine profitably again.