Then you have sources, the vast majority, that are de facto deprecated, hence are not on any list. If as an example, Counterpunch and AlterNet are never cited except following the 'verifiability policy', they are de facto deprecated, and if it's the case, the author never bothered researching his subject or even reading Wikipedia rules. Which would explain why thecritic is also de facto deprecated.
https://en.m.wikipedia.org/wiki/Wikipedia:Deprecated_sources
To be honest, it's quite easy, wiki moderators use custom search engines to improve links (especially on heavily discussed or heavily viewed article), here: https://en.wikipedia.org/wiki/Wikipedia:Advanced_source_sear...
if one of the engine return AlterNet or CounterPunch articles on political questions, it's probably "heavily used". If not, the author is a probably a liar, the editor certainly don't check articles and the publication is surely as worthless as AlterNet.
> An external links search shows around 2,580 [1] Wikipedia pages linking to CounterPunch, around 2,400 [2] linking to the Daily Kos, and around 1,640 [3] linking to AlterNet.
Considering how many pages there are on Wikipedia, and how many of these results are notes and talk pages, I think one can conclusively determine that these sites are in fact not "widely used" sources.
This isn't to say they're aren't questionable or shouldn't be filtered against of course (nor that they are and should be).
Very curious things start happening when we look through lenses like these. It's very difficult to effectively discuss unfortunately too, without getting into any catfights.
The article takes this into account: "but a similar standard has not been applied to lower quality, left-leaning sources such as CounterPunch, AlterNet, and the Daily Kos."
https://en.wikipedia.org/wiki/Wikipedia:Reliable_sources/Per...
There's a few economically conservative sources (Economist, WSJ, etc) but I don't think there's any politically conservative ones.
It just isn't symmetrical.
Wikipedia’s list of deprecated sources currently contains 16 right-leaning sources: Breitbart, the Daily Caller, the Daily Mail, the Daily Star, the Epoch Times, FrontPage Magazine, the Gateway Pundit, Infowars, LifeSiteNews, News of the World, One America News Network, the Sun, Taki’s Magazine, VDare, WorldNetDaily, and Zero Hedge – and just one left-leaning source, Occupy Democrats. Other politically biased sources have also been deprecated, but it is harder to position them on the left-right political axis, such as media companies controlled by the Russian or Chinese government.
...
but a similar standard has not been applied to lower quality, left-leaning sources such as CounterPunch, AlterNet, and the Daily Kos.
According to Ad Fontes Media‘s widely-used media bias chart (which is commonly cited in discussions on the reliable sources noticeboard), CounterPunch, AlterNet, and the Daily Kos are all less reliable than the Daily Mail. This is significant because the Daily Mail, a deprecated right-leaning source, is often used as a benchmark for judging whether other right-leaning sources should be deprecated. All three of these left-wing sources are widely used at Wikipedia.
https://thecritic.co.uk/the-left-wing-bias-of-wikipedia/