This is what happen when road users play a fool on the public road.
Usually happens when they are in groups.  Be it bikers or car clubs.
All mostly arseholes dick heads.

You can ride big bikes if you have self discipline and self principal. 
I'm riding a 160bhp bike, but I don't feel the danger.  Because I don't ride like a dick head.  There is time and place for everything.
Even though my bike can reach 120kmh on first gear, I have self discipline and self awareness that if I want to play, I'll go to the track.
Or when the highway is clear, I'll just throttle a bit just to feel the acceleration.  Riding like these whyzul type is a no no for me.  In my 30 years of riding, i never even once join all these convoy rides.

You can ride big bikes if you have self discipline and self principal. 
I'm riding a 160bhp bike, but I don't feel the danger.  Because I don't ride like a dick head.  There is time and place for everything.
Even though my bike can reach 120kmh on first gear, I have self discipline and self awareness that if I want to play, I'll go to the track.
Or when the highway is clear, I'll just throttle a bit just to feel the acceleration.  Riding like these whyzul type is a no no for me.  In my 30 years of riding, i never even once join all these convoy rides.

Based on the video, how fast were they riding?

Your motorcycle bhp is higher than my car bhp, and I can reach max speed of 170 kmh after trying hard at 4th gear

What is the thrill in throttling and reaching 120kmh on 1st gear alone, especially on public roads? This is something I don't understand.