Policy says otherwise, and this particular one doesn't seem to be ignored. https://en.wikipedia.org/wiki/Wikipedia:Verifiability#Self-published_and_questionabl

Policy says otherwise, and this particular one doesn't seem to be ignored. https://en.wikipedia.org/wiki/Wikipedia:Verifiability#Self-published_and_questionable_sources_as_sources_on_themselves https://en.wikipedia.org/wiki/Wikipedia:Verifiability#Self-p... The general bias seems to be in favour of treating sources as acceptable, unless there are reasons not to; though that may be just a matter of enforcement.