My assumption here is that this decision is one where someone had an A/B test that showed people are more likely to click on an ad when the content is structured the way it’s shown.
Which comes at the cost of a good user experience, where the feature PM didn’t truly ask: “does this deliver any value to the people using the search?”
Always trying to remember the wonderful excerpt[0] from Ken Kocienda’s “Creative Selection” on A/B tests - just because the data shows the outcomes are more significant does not make that a better experience.
[0]: https://mobile.twitter.com/kocienda/status/11134509457051770...