But people can watch those guys in The Grand Tour. The people that liked Top Gear not for the trio can carry on watching it and people who want Clarkson & Co can watch The Grand Tour...
Yeah, because everyone watched Top Gear for the reviews of cars they'll never drive. For the majority of people, the presenters were part of the package, and the appeal. If people want a car show without those guys, they can watch Fifth Gear or whatever else there is. Those guys were responsible for the wider universal appeal of the show beyond just a car show. Just because YOU didn't like them, doesn't mean they're not a vital part of it. I don't even know why you'd watch it if you didn't like them.
How haven't you heard about the new Mythbusters? It was announced around April 1st, because I remember thinking it was a joke. They're auditioning for new hosts to continue the show. I'm not watching Mythbusters without (especially) Adam Savage and Jamie Hyneman.