I’m not sure what you believe to be not true.
Wikipedia saying something is associated with the right is to be expected. After all wikipedia attracted young, western activists.
That a random guy on used nostr for a day and posted a comment is meaningless.
Check the global feed for yourself. I’m doing this for years. I see left, right and mostly libertarian posts. Check the big accounts and the accounts of the guys who develop and provide the infrastructure and those that get suggested during onboarding.