This list is two years old.

It's also kind of bad.

Most of it is well-regarded shows, some which were influential and some which weren't. And then there's a bunch of newer shows, none of which were actually influential in the way the list claims. So it really is just a list of good shows.

There are probably some very influential shows of the 21st century that actually sucked, y'know.

The explanations are also very superficial. For example, something very influential about 24 and Lost is that they were, iirc, the first network shows that consciously moved from the typical broadcasting schedule (with some new episodes followed by reruns and so forth) and toward airing every episode without interruption. This happened for Lost starting with season 4 (with a little intermediate 'experiment' in season 3) and for 24 starting season 4. This is pretty relevant to how lots of shows work nowadays!