I'll agree with you, and the majority of Android phones that I've purchased have been 'Google' models. Nearly every single Nexus either suffered from some performance compromises or chronic quality issues. You got what you paid for.
Sadly the same for me... Most of mine has been radio related issues
Galaxy nexus on Verizon radio no matter what I did
Nexus 4 crippled lte (was mostly hspa 3g) barely used
Nexus 5 probably one of the better of the nexii I used but flimsy and I broke 2 of them. 3rd retired in a drawer some place.
Nexus 7 first gen I can't remember
Second gen Nexus 7 lte major battery issues like probably a short someplace would not hold a charge
Nexus 6 actually going strong but never really used it
6p screen issues where the bottom of the screen started false touching and wigging out. Also radio issues on Sprint where I could not even send a text. Other major issues where I could not boot out of recovery mode. It's retired. Probably one of the worst nexii I've used...
Pixel XL 2 a went back to Google due to burn in and extra long battery charging wherin it was on fast charge mode but had an estimate of 4 hours in some cases
Pixel XL 2 b I'm using now but also show signs of wifi and signal issues on fi
Why do I keep buying these devices? Oh because I want a clean experience and non redundant apps like samsung uses... Oh wait... There are 3 ways to use Google assistant on the pixel XL 2...
Not to mention it sometimes seems as if Google is spamming with some of the services and notifications.
And the primary reason I was opting for this line of devices is for ad blocking but even that is getting difficult seeing how these devices are nothing more then mobile ad pushing and tracking platforms we all wilfully spend hard earned cash on...