That happens in the States too between state borders. I secretly think that States put extra effort into the area JUST at the borders to highlight the difference.
I don't think that's unreasonable at all, actually. I'd expect liminal spaces, especially entrances, to get a little more attention to their presentation than other places - everybody knows first impressions are important, right?
And even in between counties. I cross the county line between a well-funded suburban county and a dirt-poor rural county occasionally and the road quality is night and day.
I looked it up and think I found what they were talking about. It appears they are 57th out of 127 at just over 70 million barrels annually (if I'm reading this correctly) with the number 1 spot taken by the US at nearly 15 billion. I think I agree with the other response you got, just a bad faith comment trying to shit talk a country they don't like.