When i updated from 12 to somewhat 25-27 i did it for the whole purpose to receive updates again. Shall i forever be stuck on 30 now (which compared to 12 still lacks fundamental content)? With the defaultpartnercontent.json changes they confirmed my fears, that they wanna stick with their default search mentality. I have used "y" for my youtube search since ... well probably since youtube existed (or opera introduced the search engine feature). And now i must change my search hotkeys, cause opera tells me "No, y is for our sponsored yahoo partner" (which i never ever use). I could overview the lack of proper bookmark management (found an addon for that) or a missing proper "recently closed tabs button" and just so many other features, that made opera great and a nice niche pick for a browser.
I think i gonna switch to firefox for good now, it just makes me sad what this once awesome browser has become to. 15 great years and such a miserable end is just inapprehensible..