Does switching existing forum theme mean losing content?

Hi I’m new to discourse. I’m curious: If you switch out themes on an existing forum, are you still able to see the old content?

Yes, you will still see previous content. Themes just change the look and feel of a forum.

The only caveat would be if the theme altered the placement, or introduced a component to show content in a new way. This would be gone with the removal of the theme.