It’s still not wide enough to be a 20tonner, imo, but that’s just my opinion.
It does however prove one thing, it’s very hard to tell exactly what the machine is, let alone any other details. And as dodgy as it looks, it may be within the law. If you agree with the law or not is irrelevant, you can’t say for sure he’s illegal.
The fact that it’s a Merlo may make it impossible for it to be legal, I don’t know enough about them to even tell what model it is, let alone know if that machine is legally capable or not.