ETH Volatility and BTC volatility doesnt have that much difference to be honest, I actually used to do the strategy that he was talking before, I do swing trades most of the time but I do hodl as well. Trading via bots are a good decision but you gotta be good at reading the volatility too just like trading but with bot, it will help you to lessen the lose that you can get.
Both coins are in sideways at the moment but not in the similar range when we consider 5 min or 30 min candle sticks so you can't predict one with another's technical analysis and its is always important to analyse each coins movement before making a trading decisions. Trading bots are good but most people can't use it effectively because its is more easier for them to do manual spot trading than settings defined execution.