If I write "Google is evil", I mean: "I think Google is evil, and I consider this an established fact that reasonable people shouldn't be disputing."
These are different propositions, and I might want to say either of them.
A policy of not using qualifiers like "I think" because of-course-it's-my-opinion makes it harder to make that distinction. I don't think the advantage of punchier prose is worth that loss.
(Note the "I don't think" at the end; other people might reasonably see the tradeoffs differently. Note the absence of "I think" elsewhere; I don't see much doubt that there is such a tradeoff being made.)
Like you, I think when someone saying 'Google is evil' he implies 'I think Google is evil'.
But someone saying 'back then Google was still admired by the tech people" or "Losing our support" is more ambiguous. Like if all 'tech people' or a majority of them think like him which or he represents the majority.
tl;dr: I'm fine with him saying 'Google is evil' but not with him saying 'the tech people think Google is evil'.
I don't know how to say this lightly, but taking personal affront to statements of opinion is not a sign of the insult of the opinion of the speaker, but a sign of the insecurity the listener has in their own opinions.
In other words, relax.
Similarly, I'm trying to eliminate the "I think" prefix from writing. It shouldn't be necessary to write "I think Google is evil". Of course the writer thinks that. They wouldn't have written it if they didn't. They can very safely just write "Google is evil".