You can answer all the questions with the same answer (quoted from my comment above):
> Advertising exists (..) for other people to know what you can do for them in exchange for something.
Your questions are just requiring more sophisticated answers that will all boil down to that. What you say is "unnecessary funny mascots or catchy music" is brand awareness which is still "letting other people know I exist and I can sell them stuff - I hope they look me up later or remember me when they are at the shop". The others are similar. One might have distaste for the manipulation but then your problem is with people, not advertising. A slimey sales guy does as much or more manipulation without needing to buy ads.
I agree that a good salesperson manipulates people too. Instead of trying to compare how much manipulation is done by salespeople vs in ads, I think it's worthwhile to consider how the manipulation is performed.
Both ad and salesperson will probably attempt to make us feel some emotion - best case without our conscious awareness of it. The tools an expensive ad has at its disposal seem to me much more effective in evoking emotion; visual stimuli, carefully crafted music, decades of psychology research, etc.
And while we've had a chance to evolve strategies against human to human manipulation (doors, perhaps, and various subtle triggers of distrust), the ad environment is a very recent development.
I agree investigation is worthwhile. As an adult, being aware of techniques like fake sense of urgency or scarcity, playing on your maslow needs for belonging and self-actualisation etc are things you should be aware, to develop a better sense of "smell" for bullshit.
I don't think any of this is new though, I'm pretty sure the local Roman seller of beads and nice dresses did the same things to their customers on the posters they put on buildings and the cries they shouted in the square, or olive oil salespeople using gladiators to have spectators buy that specific kind of olive oil. You can look these examples up because they are real.
The technology and mediums change, but human emotions and our reactions to them change on a scale of many more years than only a few thousands.
Thats an interesting point about the age of manipulative sales strategies! I didn't consider it.
And I agree with your position that emotions change over a rather long timescale.
In fact that's exactly why I'm concerned about the speed of technological development in psychology and data science. I fear that it's no longer salesperson vs consumer. Now it's salesalgorithm and a large chunk of the behavioral science academic efforts vs consumer. The power that the producer wields is increasing at a much faster rate than the emotional awareness of the consumer.
My perpective is influenced by the Center of Humane Tech's positon. The people behind 'The social dillema' documentary and the 'Your undivided attention' podcast. Manipulative capabilities are increasing FAST. And I believe that this speed of change is unprecedented.
> Advertising exists (..) for other people to know what you can do for them in exchange for something.
Your questions are just requiring more sophisticated answers that will all boil down to that. What you say is "unnecessary funny mascots or catchy music" is brand awareness which is still "letting other people know I exist and I can sell them stuff - I hope they look me up later or remember me when they are at the shop". The others are similar. One might have distaste for the manipulation but then your problem is with people, not advertising. A slimey sales guy does as much or more manipulation without needing to buy ads.