@Michael *******
I'm pretty sure when I applied for and got my 6 month METV pre covid it didn't say anything about the 30 day extensions you get on the 60 day entry stamps, or the fact that if you time your border bounce correctly you can stretch that 6 months close to 9 months. That knowledge i had to get from forums like this.
Its certainly possible they won't give the 30 day extension stamp, but I think people are reading too much into their omission of specifically stating it.
From the looks of it it is just a regular single entry tourist visa, not some kind of special or new visa. So I would assume the extension is still available.