Of course it does. If you would invest right now $1k into BTC at the $600 price and one hour later the price goes down to $20, would it matter? Of course it would.
No matter if the price drops $20 or $30 in one hour but if you have patience and belief on bitcoin then you wont panic because you know it would recover that again in no time.
he's talking if the price suddenly down to $20,if you don't panic then maybe there's something wrong with your or you just don't need money anymore,this big price falling will matter so much especially if someone just need money in urgent but their money still not yet exchanged into local fiat
Just thinking about it is stressful enough. Look, miners need to pay something specially the electricity. If bitcoin mining cant provide me that, then there will be a lot of white flags that will come out. It will get exhausting again to start at a lower price.