[jjirsa]

GMail being at fault isn't going to make up for a missed invitation (or RSVP) to a special event, or not getting a note of congratulations on an accomplishment, or not getting a message of condolences.

Assigning blame is done after the fact to make up for a mistake.

Just avoid the mistake.

[madez]

If one completely disregards political consequences, and generally anything but personal short-term benefit, I agree with your reasoning. Otherwise, I see not how that would be possible. And I think arguing just for short-term practicality is deeply flawed; by that you'd also cooperate with a murdering dictator if it helped you personally.

[number6]

You can run into this on any service. Colleagues on Office365 got mail filtered by spam. There are false positives on every service.

If I get an explanation from the server I will fix it. I get dmarc reports and I make sure all pass. That's all I can do.