@Gaby117 It's possible that the host decided not to host for some reason for the last couple years and hasn't had any guests during that time. Why not message the host and tell him you're curious about why the reviews only go that far? I've done that with guests who had had long-time Airbnb accounts, but either didn't have any reviews, or only one or two. The answers were quite innocent- one had joined when she was planning to travel, but her travel plans had fallen through. The other said she'd actually stayed at about 5 places over the years, but the hosts hadn't left reviews for her. Both guests turned out to be great people.
If you get some response which sounds "off" to you, just move on to looking for another listing.