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.
> 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.