Some websites might require you to go through the jungle of odd choices about which cookies are acceptable and which are not. It's so similar to Italian strike (aka "work-to rule"). Imagine regular people who are forced to chose between the strange and even strangier. What can they choose but "agree to everything" or look at some gray text through a gray overlay?
There are definitely people in the HN crowd who can understand the different options offered by cookie banners. I have an example of this product of thought, maybe not the best, but good enough to demonstrate what the jungle is [1], so if at least one person in the whole world uses this option - share your answers:
1. What will you do on your next visit if your browser forgets the cookie - click again, right?
2. On which websites do you use these custom cookies, maybe you know something about some special websites?
3. Do you know about some instruments like DO-NOT-TRACK but for cookie banners? Adblock or adblock-like extentions IMO miss the point of doing the conscious decision.
4. If you are such an advanced user of cookie-banners then it is natural for you to think they are somewhat useful for you - what are the advantages of this?
[1] https://www.hull.ac.uk/