I see this to a certain degree, but I really don't think it has been all that much better in MLS. There are some who use it well, but ultimately, there's a ton of room for improvement in MLS.The galling thing is that it has been better before, in the 2018 WC, the 2018/19 UCL and currently in MLS.
It's very difficult to escape the feeling that the only thing different about the WWC is that the calls of the refs on the field are being trusted less than we're used to in other competitions. I wonder what single variable could possibly be responsible for that...
I do think that in the 2018 WC, it was used very well.
I have also heard a lot of grumblings that its use in the current Copa America has been pretty shitty. But I'll defer to others on that as I have barely seen any of that tournament outside of 1 or 2 highlights.