Not, I don't think in this way, but you know, some of my friends have cheap electricity and they are in profit. As for me mining is weird at the moment, I know more profitable ways to earn money!
for those who have been mining for more than 2 years, they may still be able to make a profit. but in contrast to those who have just joined, it is definitely not profitable for the high cost of electricity and maintenance to make mining very difficult.
that's why I prefer POS than POW, but unfortunately there are no good coins that have a POS system.
Depends no matter if you start now or 2 years ago, roi depends on a lot of variables one cant predict. Is it harder, yes...is it still worth it, yes in the right conditions.