Just because BTC goes up doesn't mean I want to own it. Other altcoins have the potential to go up way more than BTC. I cover BTC primarily in videos because this tells us where the entire crypto market is headed. It is far more useful to know what BTC is doing, which tells us to some degree what every coin is doing.
Also, this content I provide on a daily basis sometimes, is just daily analysis. It has very little to do with long-term investing, other than it gives us good entry and exit points.