I don't watch the video but I know about the btc n alts mining because I have miners for btc ant miner n gpu cards miners for alts coins , as I know btc mining or alts mining through PC is just wast of time , in start ( few months before) when I was new in mining I start from PC but soon I realize this is just wasting time n power , I will advise for alts coins mining the gpu rig is best option.