Does fetch_feed get_description strip avay tags by default?

https://codex.wordpress.org/Function_Reference/fetch_feed

A colleague made a widget for displaying the latest disqus-comments. Users sometime tag part of the text as a spoiler by using a built in disqus feature that wraps the text in <spoiler>thing</spoiler> tags. When using fetch_feed I can see that the spoiler tag is in the array, by print_r-ing it, but when using $item->get_content() or get_description the spoiler-tag has been stripped away. Is this done by the get_description function automatically? and is it possible to turn it off?