The recent thinkpads are shit. They market high tech materials in the T14s machines but the bottom for a huge amount of the line is aluminium with plastic mounts glued to it. Those are fragile and break off. So really the whole magnesium alloy thing is performative.

I preferred the older plastic coated Mg chassis ones. At least they were honest about the materials.

Personally I avoid laptops now since the T430 line. Desktops are faster, cheaper, more reliable, easier to repair and replace bits and most of the time I don't need to carry a computer around.