They presumably were doing it to increase "engagement". More time spent getting infuriated with their worsening search meant more time seeing their ads.
They deserve to go under.
Meanwhile 1 minute unskippable ads on 30s YouTube videos, pop-ups on mobile that cover the video when you close an ad. I hope the UK TV ombudsman grows some balls and starts applying the law on advertising-to-tv-programming ratio. It needs to be applied when programs have ads in them too.