Then let me tell you by experience why you'd rather a boring game. I personally casted RL amd CSGO for a few years, some games can be solo cast, and others cannot. Rocket league is near impossible to solo cast while properly following the action. You go for 30-40 seconds, pass it to your partner, take a drink of water, and then continue on. A boring RL game still feels great because theres always something going on, and the casters have the effect of making a bad game good because of it.
For CS, as a duo, both casters are looking at seperate things, especially since they are also their own producers most of the time, they also do the cameras. Solo casting CS is doable, and you even see pro tournaments like CCT running with solo casts sometimes. That guy needs to work cameras, talk about what he sees on screen, as well as be aware whats happening offscreen and probably talk about it.
With that said, with how slow, and methodical VP are, it's extremely easy to figure most of it out, and you rarely get caught not having the right camera or talking point, especially when they play T side.
Meanwhile imagine a game between Furia before fallen and chelo came in, and heroic. There is no time to relax, they can attack at any point, rush at any time, meanwhile there are still lurkers doing work, and nades being thrown, utility being used, angles being held, and the time crunch to notice it all and talk about it or at least acknowledge its existence in your own head is migraine inducing. If i had to cast any VP game, I would likely be able to solo it, but if i had to do heroic vs old furia, i would never be able to give a quality cast without a partner, and even then we'd probably still make more mistakes than me soloing a VP game.
TLDR: professionally casting a VP game is much easier than unpredictably fast teams like old furia or heroic.
Edit: It's also more fun for me personally to make boring games good, which is why i always loved casting lower end games.