I think they've ran out of them a long time ago. I requested a non-ZTE that support 5Ghz last year. They didn't have any and they said they weren't ordering them anymore. Those Tilgin are probably old stock.
Not sure about Hyperoptic, but CommunityFibre (gigabit FTTP) also uses Huawei routers (and presuming kit in the rest of their infra). I can hands down say, as much as it was a shit router, it still was better than the routers I've been given with any other provider.