How many people mine it will not affect the value of Bitcoin. The algorithm is written to always produce a new block every 10 minutes, no matter what the computing power is of the network.

If 90% of the miners disappeared overnight, the mining difficulty would drop 90% and the block time would still be 10 minutes. That won't happen of course, because if it did then everyone would turn back on the miners to get the 10x increase in reward.

I have a contract with Hashflare that they have not been paying out for over 30 days. It is only small investment, but this very much smells like an exit scam to me. Most investors believe BTC is moving into a bull phase. No doubt they will keep the miners switched on but just claim all the profits for themselves.