Ask HN: They said I should Not learn HTML and CSS. Why?

I recently gave a seminar to marketing students at a local college. When asked how many knew any HTML and CSS. Only 1 person raised his hand.

After the talk was over, a student came to me and tells me that "They said I should not learn HTML and CSS"

The next day I asked a local FB group to guess how many students raised their hand when asked if they knew any HTML or CSS.

What started as a mission statement to change. Became a heated conversion why you should NOT learn HTML and CSS.

Why?