I say this as an accessibility specialist - I think this site is fine. The authors have made a site that brings them joy and if they see customers dropping off

I say this as an accessibility specialist - I think this site is fine. The authors have made a site that brings them joy and if they see customers dropping off and are fine with it, that’s OK. For folks complaining of headaches or eye strain, browsers come equipped with forced-colors mode that enable you to choose your preferred color scheme.