Lightweight can always do a great job in mobility! Nice job! In modern warfare like in Ukraine battlefield shows MBT should be needed to reset their character, especially facing drones, accurate artillery, and portable anti-tank missile all over the fields.
As far as I know, there are 3 MBTs that have never been proven to play a role on the world battlefield, namely the Merkava from Israel, the K2 Panther from South Korea and the Type 10 from Japan.