Not defending the probable Russian shill, but Wikipedia is a pretty reliable source. What it is not is a primary source. But every claim has a source whose reliability can be assessed (and what counts as reliable is going to vary from person to person). So, no, if I’m writing an essay or a formal document, I’m not going to cite Wikipedia. But if I’m arguing with strangers on the internet, Wikipedia is a fairly credible place to start backing up your claims.
Not defending the probable Russian shill, but Wikipedia is a pretty reliable source. What it is not is a primary source. But every claim has a source whose reliability can be assessed (and what counts as reliable is going to vary from person to person). So, no, if I’m writing an essay or a formal document, I’m not going to cite Wikipedia. But if I’m arguing with strangers on the internet, Wikipedia is a fairly credible place to start backing up your claims.