I'm questioning if they really know what good engineering is. I'm not saying they are bad at it. Those are two different claims
That they are the default entry to the web is their main asset. Agreed. Their search is good enough, and they are good at monetizing the top boxes of their search results. Really good.
That said, most of their engineering hires are not working on that. And they have a string of unfocused attempts at entering markets that smacks of not having a good sense of how to use engineering in a field. Basically, of they can't recreate the field, they give up. Rather quickly. That isn't engineering. That is just brash spending of money.
Nope, you're actually claiming that they're bad at product. Maybe you can question their product management or marketing hires?
Their most successful product is still search, followed by android and youtube. Their stock is up 300% in the past 5 years.