It is bot ha great news but also a terrible news for Daniel Ricciardo as well, because it's terrible since he will not be going to Red Bull and going there would have been better for him, and yet it also means that he will not be on Max's shadow, and he doesn't have pressure on him and he got used to his car at AT for a while, so he could do very well this season. The fact is, if he does better than his teammate, he will be fine there, he is getting older anyway, so it would be fine to have a few more decent seasons, that's it.
It doesn't make big difference whether Red Bull have Sergio Perez or another driver at the moment honestly. Because they have a beast like Verstappen who can win nearly all of the races in a calendar. This is just an insane domination. Verstappen literally carried the team to the constructors title very easily by himself.
Even if Perez didn't collect any points in the whole season Red Bull were going to become the champions anyway. I expect pretty much the same performance from Verstappen next season as well.