I don't think it's healthy to hate Windows or Microsoft, but every reasonable person should at least dislike them with passion for antifeatures, dark patterns and their other stunts, as well as for their lack of respect to customers. Few years ago I had to call Microsoft as a business customer and it was one of the worst companies I ever dealt with. I would never run Windows or Micrapsoft anything in any business setting, even for non critical stuff.
That's not what he said. You said you hated Windows because of its vulnerabilities, and he was asking you if you apply that same standard to FOSS, and if not, why not.