There's also some propaganda regarding the "Wagner Line"
https://twitter.com/Tendar/status/1583842594454646785
It appears that the concrete "Dragon's Teeth" that Wagner forces are placing to form the "Wagner Line" are hollow or open at the bottom, because you can fit a lot of them onto a moderately sized medium truck.
A lot of people on Social media are going "hahah lol", but I'm more nuanced.
The name of the game is area denial. Sure, they may too light and not dug into the ground enough to stop a T-72, but they'll stop a lot of other stuff, and they're too heavy at a minimum to move without specialized equipment.
In other words, they'll stop / deter Ukrainian raiding columns composed of Humvees and other light vehicles.