But why do agencies, municipalities, (government) railways or other non-ads driven websites need to have cookies, and hence the frustrating banners?
My hypothesis is they want to be "better safe than sorry" but maybe there are real marketing purposes behind it?
some examples: https://www.mckinsey.com https://www.london.gov.uk https://www.ns.nl (Dutch railways) https://www.britishmuseum.org
The right side is - why those bureaucrats are so stupid, short sighted and people hating that we have the frustrating banners even on harmless websites.