Ohhh, due to the misleading information that caused the pump.
Not likely but the raise in price made it more profitable to mine it. If profitability rise, miners could decide to chase profits and move from BTC and BCH (and other SHA256 coins) to BSV, thus raising the hashrate, raising security of the chain. At that point the price could eventually raise. There are a lot of factors in price movements, profitability is more a consequence of price increase/decrease.
I see so there's other reasons why there's a pump with that coin. And as it dumps, it got a better support.