Saw the video. Yes, the stances are deeper than typically found in Okinawa, especially in Funakoshi's tekki, compared to most Okinawan naihanchi versions. So, it does seem he had begun to modify the art's look right from the start in the 1920's. IMO, many of the other techniques shown still retain some Okinawan flavor in their agility, "springiness" and general form.
(Since Funakoshi initiated the physical modification of the Okinawan style in Japan, it may be more accurate to say the 1920's was the time of "Funakoshi-ization" of karate there and the 1930's onward the time of Japanization as the JKA took control over the art.)
Pinan 3 predating Funakoshi's "heians" does have crescent kicks, which like roundhouse kicks, and to some extent sidekicks (other than to the knees) are seldom seen. Even though some moves may not be part of kata or kihon it doesn't mean they were not part of the Okinawan toolbag. We don't really know a lot of how early karate looked. I find it hard to believe some sort of close-range angled (roundhouse) kick did not exist.
But the most important "reveal" of that old video has to be the
tanga, the traditional loincloth (thong). You'd have to learn how to fight if you wore that around town

!