[technion]

I don't think this should reasonably be pinned on engineer remuneration. If you were advertising for "top performance tuning experts", it's fair they may not get them. But every criticism regarding root issues with the site (dark patterns pushing the app, AMP pages that don't load any content, loading screens that don't load anything, pages that almost seem deliberately broken) are really not the sort of things you associate with someone who "worked hard on performance but wasn't skilled enough". I would generally expect if they doubled their rates they'd get better ad targeting and investments in a range of places that aren't "faster websites".