I think, if you looked a bit closer, you'd find that Wikipedia is more opinionated about certain topics than others. On Wikipedia, Ted Kaczynski is a domestic terrorist first, and a mathematician second, but Bill Ayers is an education theorist first, and a domestic terrorist second. I don't really see any "standard" here. To my eyes, the bias is fairly consistent - somewhat left of American center plus a little bit of libertarian - not dissimilar to hacker news.
I mention Bill Ayers specifically because I asked a friend if they had heard of the Weather Underground recently and they said "sounds familiar, remind me?" And I said "Google Bill Ayers" and they paused and then said "the elementary education theorist?" And I said "lol, yeah, that's funny." That first sentence is what shows in Google results on mobile devices - it matters.
He was part of the weather underground years ago, he has spent decades as an education theorist since then. Education theorist is his current profession. Ted Kaczynski abandoned his mathematics career in 1969 when he was 27, and has spent the past 40 years either bombing people or serving time for doing so.
Similarly, Donald Trump is described as an American politician and the 45th president in his opening sentence, with discussion of his past in business and as a media personality reserved for later in the article. The standard wikipedia introduction is to list common aliases, nationality, and their current/last profession.
I will also note that on my mobile device if you google Bill Ayers, the first two sentences of his wikipedia article come up. The entire second sentence is about his involvement in the Weather Underground.
I mention Bill Ayers specifically because I asked a friend if they had heard of the Weather Underground recently and they said "sounds familiar, remind me?" And I said "Google Bill Ayers" and they paused and then said "the elementary education theorist?" And I said "lol, yeah, that's funny." That first sentence is what shows in Google results on mobile devices - it matters.