Yeah, that's exactly what he was saying.. But I doubt that all those GPU will remain down for a long period, a new big coin should come out sooner or later
That's exactly what i'm thinking, there's too much hardware to just let it go down.
There is no relation to a coin being profitable and lots of miners.
You actually want there to be a period with little profit so the global gpu amount can shrink back to a reasonable size. So when mining becomes profitable you can jump on it and just switch your rigs on again. This industry thrives on high growth.
If there is a high level of profit the miners will always eventually catch up and turn it into a cut throat industry with razor thin margins.
The good news is computers have reached a point where they will have marginal improvements, so your current rx 4xx gpus will be viable for a very long time.