While it's not a bad advice, as someone who's been reading avidly every chance they get-- I think it depends how this is executed. I've seen some actual quality works of art being dropped by friends because the authors/content creators utilized this method of attempting to hook audience without giving them any context and throwing them in the midst of some turmoil. This kind of reaction ranges from video games, to shows, to even novels/comics.
If done properly, this advice can work (like many other effective ways of utilizing hooks), but it can also deter people-- to the point of dropping your work faster than stories that keep me around for a few more chapters/etc. Best example I can give is Gungrave . It's something my friends recommended to me, and that kind of went around in a circle in a giant group of friends--- and more than half of them dropped and refused to pick it up again. Even I dropped the animation after seeing the first episode and took me a while to actually pick it up again. Some of my friends to this day, still refuse to even see the second episode.
I can see this type of hook being more popular with games where immersion is a big thing-- and kind of getting an unsuspecting player to forcefully throw themselves into the world and thus learning about the world/characters/etc before usually transitioning into some form of a cinematic and/or exposition of the story.
Comics, I'm somewhat new to them and have been getting them into them more recently, but I think the best examples are the type of Isekai focused stories (Reincarnation/Transported into another world/etc). What got me to come to Tapas in the first place were the two popular premium comics that I saw on another site as a teaser and made me want to read more. Adonis Prologue is a great example in my opinion since it was enough to get me to buy all the chapters with the read of a Prologue (didn't even read the other chapters) because the premise got me interested enough.
Now as for novels, this is even more difficult if not executed properly because you will likely confuse them and possibly even lose their attention. Being a huge fan of the Isekai genre, I tend to read this type of hook a lot-- and sometimes I've seen some stories fail miserably at it to the point that even if it has 100+ chapters with plenty of high ratings from various fans, I keep pushing it off into the back of my list to read and read other stories. But when executed properly, it does get me hooked long enough for me to read into the entire story.
Overall, I think what it boils down to is like any hooks, first impression is a huge factor not just in storytelling and art, but for any product. Your advice can definitely be good-- but I'd warn content creators to be wary and only utilize it if they're confident in utilizing this method as it can also work as a deterrent to your final product.