Indeed, except when you do want to know more. So offer more info: in a tooltip, a link to more info, or an "expanded explanation".
Another factor to consider about the length of descriptions is whether you are displaying a list of items or a detailed view of one of them.
In a list, the overload of text multiplies per the number of elements making it harder to scan.
App stores and browser extension repositories, show very little information when displaying a list of apps/add-ons (icon, category, user feedback/users, and some include a short description). Detail pages have longer descriptions (although screenshots galleries are normally more prominent than descriptions in that context).
Longer descriptions at detail pages are not that problematic in comparison, but even there the more concise and clear the information the better. If users know that there are no problematic side-effects by adding/removing a feature (the platform should convey that), users will be encouraged to explore and try them.
Pau