The thing is: When working with the material afterwards the important part are the small details. The talk/recording are good for the high level overview and following along on the big picture, but for details it is annoying as one has to jump around for specific words and phrases. Something written or an image/diagram is a lot better to study in depth.
And there lies the trouble with slides: During a talk they should support what is being said, but they are often abused as also being the handout for afterwards.
It sounds like you want detailed documentation. That’s fine, but that’s not what a talk is. A good talk isn’t a reference. And good documentation isn’t an engaging talk.
If people want that, produce two artifacts. Don’t try shoehorn a talk into being documentation. That’s just a recipe for bad work.
It depends on what the talk is about. Of course Steve Jobs' of cited iPhone introduction didn't have any details for in depth research later on, but was a high level product introduction.
A technical talk however explains a concept, a tool or something and thus contains technical information to follow up with, but for that I need the words, the phrases stated so I even know what to look for in the manual. And probably I want to follow it in the order they presented it (I hope they thought about the order they presented it in!) however the manual is ordered more in a reference order.
So yeah, if you do a high level marketing talk it doesn't matter, but then I also won't spend the time on watching a second time. If it has technical depth, then being able to follow the depth is good.
I have dealt with this issue as well before. If folks need something more in depth I will use a LLM + some massaging of my own to create a supporting document. Here is an example of a very disorganized conversation and the supporting document I made with it: https://www.danielvanzant.com/p/what-does-the-structure-of-l... It has clear definitions of the key terms. Timestamps for the important moments, and links to external resources to learn more about any of the topics.
And there lies the trouble with slides: During a talk they should support what is being said, but they are often abused as also being the handout for afterwards.