does look like baikal has already mined monero to death. just a few months ago xmr was right up there with Eth on being the most profitable algo to mine. about 3 months ago cryptonight became much less profitable than ether even though monero was almost keeping up with ether (percent wise).
If all the miners of xmr were gpu miners, then that doesnt make any sense. Because a large portion of miners will switch algos as long as they're not mining shitcoins. as we get close to xmr hard fork, they're dumping miners.