First I don't understand how, even with the current "crash" on the altcoin markets, your profitability can be declining rapidly. All coins have doubled/tripled (and more) in value within the last few months. Even if you mine less coins, the profits are still huge compared to last year. So unless you pay 1$/kWh...or I'm missing something.
I am making looking at whattomine 24USD gross per day, as I said this is not far off what I was getting back in November.
During the same time I was earning far more crypto as the difficulty was much much lower.
As for all the "salty noobs", man, what would you do if you were one of them? You'd want to jump on the train while you still could. That said, it's their own fault if they crash and burn because they bought RX cards for 500$ a piece...
I was looking to expand with a new rig to the tune of 5 x 1080ti but now I am hesitant. If people do start dumping GPUs in 1 or 2 months time I will be burned by the price difference so I am thinking to wait.
I first mined years ago. I mined BTC with GPU's in 2012 and then followed onto scrypt coins I dropped out when the profitability diminished and subsequently missed out on an excellent opportunity.
There are, however, plenty of people who, just like I was, will be stupid enough to be FUDed out of crypto.
Patience friend. Now is not a time to rush into things. If you have a mining operation going already, then be happy about it because you did not pay for overpriced hardware ;-). You might be suffering from the difficulty and the shortage/price of hardware to expand, but right now feels a bit like one of those periods when people get crazy, dump all their cash into something and end up losing it all.
Like you said yourself, I think many of the new miners do not care too much about the underlying technologies of the crypto coins. They just see this as a fast way to make extra cash and I betcha that come the end of ETH mining, you'll see dozens of posts about "Can't mine ETH anymore, what other coin can I mine?". They are just like 90% the end users that are too dumb to think and do their own research and expect you to do it for them.
The truth is that cryptos will change our lives in the near future and many people seem to be completely oblivious to this fact.