Interesting, with a few descriptions that made me winCe... - as cited:

1. "...This image demonstrates the incredible telephoto compression of this lens..."
and
2. "...hoping to show the incomparable compression capabilities of a 1200mm lens..."
then
3. "...We were able to get images of the boat from a great distance that gave the perspective of
shooting from the water on a chase boat in close proximity to the trimaran..."

- and one of the most wincEABle:
4. "...I can only imagine how using an APS-C format camera would extend this reach even farther..."

A jest, surely, as long as he's not saying it makes a good portrait lens:
5. "...Let me be the first to say that a 1200mm lens is really good for portraiture. The Canon’s incredibly shallow depth of field
(1.1" at f/5.6 and the minimum focus distance) ensured that the backgrounds were reduced to ultra-smooth renditions of unrecognizable creaminess..."

I was unaware that the populace had such an appetite for populism. Pity the budding photographers.

I wonder if there is a like lens, or if "that's it"?

Here is another, somewhat more technical, review: https://www.the-digital-picture.com/...ns-Review.aspx