Is it good practice to allow users to navigate simply by hovering on a menu item without clicking?

1. Why is hover bad for accessibility?
2. Are Mega menus good?

Why is hover bad for accessibility?

Additional content that appears and disappears in coordination with keyboard focus or pointer hover often leads to accessibility issues. Reasons for such issues include: the user may not have intended to trigger the interaction. the user may not know new content has appeared.

Are Mega menus good?

Mega menus can make for a better user experience on websites with plenty of products and services. They show everything crisply, and they allow visitors to see the full range of options.