I had seen another video with a monero dev discussing how monero itself wasnt quantum resistant, and tgat zero knowledge was, but when i shared this Ruben from Firo said that was untrue. Since quantum doesn't really exist as we imagine it yet, we don't really know
According to a study published by quantum researchers, monero has some resistance to quantum and the PoW RandomX algorithm created by monero is the only system without vulnerability to this among all existing algorithms!! #Monero #XMR https://www.sciencedirect.com/science/article/pii/S2590005621000138 
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Just for information, the monero contributor called "tevador" has already laid some foundations to prepare monero for the arrival of quantum. Monero is not entirely resilient at present, the article by quantum researchers is long but interesting to read.
https://gist.github.com/tevador/23a84444df2419dd658cba804bf57f1a