Google has definitely stopped being able to find the things I need. Pasting stack traces and error messages. Needle in a haystack phrases from an article or book. None of it works anymore. Does this mean they are ripe for disruption or has search gotten harder?
My guess is that suppressing spammy pages got too hard. So they applied some kind of big hammer that has a high false positive rate. You're getting the best of what's left. Maybe also some quality decline in their gradual shift to less hand weighted attributes and more ML.
Was it Panda update or that one plus the one after - it took out so much of the web and replaced it with "better netizens" who weren't doing this bad thing or that bad thing.
Several problems with that - 1 - they took out a lot of good sites. Many good sites did things to get ranked and did things to be better once they got traffic.
The overbroad ban hammer took many down - and many people that likely paid an seo firm not knowing that seo firms were bad in google's eyes (at the time) - so lots of mom and pops and larger businesses got smacked down and put out of the internet business - just like how many blogs have shut down.
Of course local results taking a lot of search space and the instant answers (50% of searches never get a click cuz google gives them the answer right on the results page (often stolen from a site) are compounding this.
They tried having the disavow tool to make amends - but the average small business doesn't know about these things, and getting help on the webmaster forum is a joke if you are tech inclined, imagine what an experience it is for small business owners.
I miss the days of Matt Cutts warning people "get your Press Releases taken down or nofollowed or it's gonna crush you soon" - problem is most of the people who were profiting from no-longer-allowed seo techniques were not reading Matt's words.
I also appreciated his saying 'tell your users to bookmark you, they may not find you in google results soon' - yeah, at least we were warned about it.
The web has not been the same since those updates, and it's gotten worse since. This does help adwords sell and the big companies that can afford them though.
In these ways google has been kind of like the walmart of the internet, coming in, taking out small businesses, taking what works from one place and making it cheap at their place.
I'd much rather have the results of pre-penguin and let the surfers decide by choosing to remain on a site that may be good that also had press releases and blog links... rather than loosing all the sites that had links on blogs. I am betting most of the users out there would prefer the results of days past as well.