What happens if a flood of ETH miners hit RVN?

I've been noticing a lot of discussion on other reddits (NiceHash, gpumining) suggesting that people move to RVN after ETH 2.0 is launched in December and switches to a PoS model.

I'm wondering, what's the current take on what might happen if the hashrate of RVN were to increase by a few thousand percent or more? The rewards will stay the same, meaning that if the price doesn't also increase by the same amount that's less return for everyone already onboard. Some have pointed out that if interest in RVN increases, the price will follow, while others have countered by saying that if only miners become interested, it's a wave of sellers rather than broad interest.

Opinions and speculations?