The only good thing about a sideways market is that the price action between support and resistance is more predictable, so it's a good time to scalp.
The problem with any type of short term bitcoin trading is that it is never easy to predict anything. I personally blame the irrational investors who keep buying bitcoin hoping for quick profit, aka weak hands. At any time the "more predictable" support or resistance could be broken just as we saw hundreds of times before where price shoots up or crashes down.
My favorite example is from April 2019 when $4k resistance suddenly breaks and price shoots up 50% in one day doubles in a couple of weeks.