Who uses Wikipedia as a trusted source? I do! If I'm with friends from around the world and we need to convert between Celsius and Fahrenheit, I look for the formula in Wikipedia and no further. Yesterday we wanted to know if a kettle really reached 100âC. Wikipedia again? You bet? Or idly reading about WW2 battles maybe triggered by a contemporary reference? Wikipedia again AND NO INTEREST IN OTHER SOURCES, as always.
I think a big part of the trust is I can trust a search result that points me to Wikipedia, but every other search result might just be an advertising sink, or other people asking the same question with no reliable answers, or other junk.