wikipedia is reliable enough to get an overview of something. it doesnt mean its literally lies.
many teachers and professors encourage people to use wikipedia as a starting point to find more trustworthy/reliable sources (in the citations). "wikipedia is not a reliable source" doesn't mean its literally worthless, it means you cannot take the ideas/text/facts there as complete and irrefutable truths.
its comparable to some random classmate telling you something that happened at school while you were away. you can't take their word at face value - they may be missing the details behind "someone was caught cheating" - but you can assume that they aren't making up something entirely.