I use ad blockers and open source privacy focused software whenever I can but occasionally I have to use computers that don’t belong to me or an older phone where my usual applications aren’t installed and seeing all the advertisements just feels dirty and dystopian.
I think the worst ads are the text to speech ones that say “Download this app today”. The unblinking energenic people saying you can make a living at home are probably a close second.
“Jarring” would have also been acceptable.
Most people are so desensitized to ads that they barely register. So the advertisers ramp up the attention-grabbing. Repeat. So when I actually see an advertisement it nearly knocks me out of my chair because I’m not desensitized anymore.