It's music, Rav.
If you like it, you like it. If you don't, you don't.
If a country artist made a hip-hop album, I would only care if it was good. Because then I'd be listening to it. If it wasn't good, I would say it wasn't good and move on. I wouldn't be insulted at the effort.
Music doesn't belong to anyone. It isn't something where to say you started like *this* so you can only do *this*...how dare you do *that*?!?
If he thinks he transcended hip-hop, more power to him. but, he's rapping on this album. Straight up rapping. The production isn't boom bap. But, he's rapping like only a rapper could. I don't think it's "this is what hip-hop sounds like and if it doesn't sound like this, it isn't hip-hop" situation. That's constricting. And just wack. Boring. Repetetive. All that.
He's made that album 3 or 4 times. He wants to do something else. And that's fine.
It really only comes down to whether it's good or not. Credibility in a certain genre is up to said genre to check.
If that genre is offended by your attempt, they'll get you out of there pretty quickly. It's a system of checks and balances. Same way he didn't have any cred in clothing, he's outta there.
If EDM/techno/house...whatever, feels a way, they'll get him out of there.
None of that is an opinion on the album. Whether you think it's good or not doesn't matter. But, he does have the right to make it. And it is hip-hop...with heavy influences from other genres.
It's not stale.