Yes, but it misses the fundamental fact that fashions in frame size have changed a lot in the last 30 years. People used to ride big frames with short seat posts. When I went into a bike shop in 1978 they fitted me to 62 cm frame. If I went in to a shop today, they'd probably try to sell me a 56.
Ah, but my friend, the seatpost in question was meant for a bike 30 years ago....
Even my aero Campy seatposts are short.
As far as fitting, one of the trends from about 2002-2008 was to put people on the smallest possible frame, resulting in maximum stiffness, least weight, etc. I have a friend who was fitted on a 2006 Kestrel, 56cm, in 2006. His Campy aero seatpost was used, by the bike shop, with maybe 2" of insertion. I was amazed when I pulled it out that he'd not broken the seat tube off. Anyhow, over the years, he complained of a sore back, and was able to afford a new/better/fancier bike, so he went back to the same shop. They put him on a 61cm Tarmac, and it's showing about the same amount of seatpost as the Kestrel. Same shop.
With some modern frames and seatposts, it's recommended that the seatpost "bottom out" in the seat tube, especially if they are monococgue carbon frames. Often, the seat tube is a large diameter, shaped tube with a sleeve inside. That sleeve doesn't extend all the way down the tube, but often is just 2"-3" deep. A saddle on a seat post that is extended out of this tube and sleeve, and not bottomed out, can easily break the top of the seat tube if the bike simply falls over. Bottoming out the seat post tends to help mitigate this leverage.
I bought a carbon bike that had exactly that happen. The seat tube was only very slightly cracked at the top. However, looking down into the seat tube, I found the aluminum inner sleeve had completely cracked around its circumference. The frame maker wouldn't touch it, for liability reasons, I'm sure, and would not advise me, officially, on how to fix it. However, an employee did offer advice, and a BF member sent me some adhesion promoter for windshields, and a local windshield manufacturer gave me some adhesive and guaranteed if I followd directions, that sleeve would never come out. They were right, and after I fixed it, I bought a new seat post and trimmed it so as to be bottomed out at all times. When I sold the bike to a shop, I told them if they were looking to lower the seat post, they'd need to measure twice, cut once, etc. I told thim if they were looking to raise it, they'd need to buy a new post.
Two weeks ago, an acquaintance put his main ride Rubaix in the shop. He brought his early 2000's carbon fiber bike to me to re-fit to him. The seat post was bottomed out properly, but he wanted to raise it, and I didn't have a long enough CF on hand to make it fit, so I sent him on. With the seat post raised 1" from the bottom, you could wiggle it back and forth. He decided to ride it as is.