I've got a 2019 model Extender, Next model down from the 4WD. I only need 2WD as I live on the outskirts of Bangkok and have no need to go off road. For me, it's a great truck, with what I consider to be a very high spec. It's comfortable to drive (Remember, it's a truck) and has more than enough power for my needs.
So far, it's been very reliable apart from 1 issue where ants ate one of the relays. It wasn't MG's fault but they still fixed it FOC. Build quality seems fine, with no issues after 3 years of use. The interior looks as good as new.
I intend keeping mine, so I'm not concerned with the resale value, but given the chance, would I have another one? ......Yes definitely.
Most people on the forum who voice negative opinions, have never even sat in one, so my advice is to visit a showroom and try one out.