It looks like the speed of the video is at 1.25 or something like that. The hand/finger moves kinda un-naturally. Is it just me?

Either way, it looks great. I do watch some YT vids, but I focus on the audio (i.e. watching some urgent news on Sky News (live) - video detail is not as important when something very bad has happened).

It's about 3x. At 19-20s time goes from 5:44 to 5:45, at 40s it goes from 5:45 to 5:46.

That's pretty misleading and borderline deceptive. They should release a real-time video.

There are other videos here: https://daylightco.gorgias.help/en-US#article-493382 . That one video appears to have been sped up, my guess is to try to show a "summary" of functionality. I tried a few of the other videos and they don't appear to be sped up.

Yeah, for something where the performance is actually a selling point, you should probably feel obliged to include a clock or some other reference in the image. (I'm not claiming anything about this particular video - just that you really want to eliminate the perception of impropriety here.) This was a big problem in robotics for years - it eventually became standard to still do sped up videos but be disciplined about including labels, and robots finally got to plausible speeds at actual tasks - but it didn't take much early-on fakery to get people to assume that most videos were sped up.

(There's a lot of staging and other "creative presentation" that's legitimate marketing - but if you're talking about speed/responsiveness at all, you really need to be explicit.)

I think context matters; that specific video is meant to show a summary of the functionality; it's in a section called "ereader on steroids" and it doesn't say anything about speed. And there are a lot of other videos on the same page which are not sped up. https://daylightco.gorgias.help/en-US#article-493382

Labelling the speed would be nice, but I don't detect any bad intentions here.