It really depends on who the audience is...
Speaking to them and making them care is job two.
1. First, make me care.
2. Then provide an indication (e.g. in the video description) giving the time in the video where the question starts to be answered.
If you make me somewhat care, but I have to binary search through your video to skip the rambling, I'm likely to back button out.
Then expand on it in increasingly advanced levels of detail.
If your knowledge is high, I won't care about the video production. If you're not getting to the point quickly, you're manipulating the audience into getting views; education and sharing knowledge isn't the main driver of your video.
But what I want is idealistic.
So 'first make me care' to me is a manifest of Gen Z - tiktok - brainrot approach. From my perspective you miss most of the really good stuff by cultivating this approach. I.e. my favorite books - Tai Pan, Noble House; tv series - Better Call Saul! - require you to go through so much of initial boredom. It's also the same discussion as 'learn to code vs only do AI Slop' or 'learn math and algos vs only import functions from libs and never check what's inside'.
*Exceptions apply, ofc. There are things that hook you and progressively ad depth, but it's really rare. I.e. Arcane tv show is both easy to access and quite deep.
Edit: ...so I can imagine math teacher that first tell you what are some amazing uses of derivatives and integrals - PIDs, SGD, better estimation, wave functions, generalized description of problems, accessing interesting physics etc. And after that they make you grind. I think it would be quite great. But it is so rare, that you have to make a leap of faith and assume most of the good stuff is boring initially.
Best example: the walking dead season tv shows.
Increasingly, readers don’t have time for this shit. Be direct, and if the reader doesn’t care, they were never meant to be your reader anyway. Someone will care, write for them.
The example leads to one classic bit of writing advice: tell only the very most important things and omit everything else. Start the story as late as you can and end it as early as possible. This applies to nonfiction just as much as to fiction.