Linked video is related due to word play (buffering/buffering) - It's somewhat unrelated just like your comments in this thread
buffeting is also unrelated to Buffet.
https://jalopnik.com/why-do-slightly-opened-car-windows-make-that-awful-soun-1447498738
I think I see. You wanted to expand on whole internet speed vs actual video streaming experience.
Yes, a very common solution to issue of not wanting to wait very long time until the movie downloads whole is to pre-load small part of it and play it while catching next small segment. It's what buffering is in shell.
Now buffering could go so far - if your internet speed is very slow - you'll have to pre-download VERY large percent of the content to have good (uninterrupted) experience. In some cases it's just not possible.
One can't stream 4k video on DSL - it just won't work right.
It's a fairly technical to know what sustained internet speed is needed for every type of video streams and in most cases it's best to rely on content provider recommendation, not one made by your isp.