As long as it says "buy a license to use Minecraft" and not "buy Minecraft" then yes. If it just says "buy" without telling you what you're buying them a reasonable person would assume it was a good and not a license. You want to sell me a license to some unspecified-until-after-sale access to a good, then don't obtain my money by deceiving me, tell me up front ... then yes, you win at capitalism, go you.
But that truth impacts sales as people want ownership without companies being able to rug pull. We want to be able to load up Minecraft in 30y regardless of whether Microsoft decided they're done with it.
You're buying a licence. So the "buy" button is not fraudulent.