Are .backup files important or can they be deleted?

Hello,

I just start using myjoomla.com site audit and it show many file as the ones bellow (like over 2500 of them). Most ot them are related to easysocial and Easyblog. Myjoomla mention that I should be able to remove them all!!!

Is that true?

/media/com_easyblog/scripts/easyblog-3.9.19025.static.min.js.backup
media/com_easyblog/scripts/easyblog-3.9.19025.static.js.backup
/components/com_easyblog/helpers/easysocial.php.backup
/media/com_easysocial/apps/user/blog/themes/default/streams/create.content.php.backup
/media/com_easysocial/apps/user/blog/themes/default/logs/title.create.comment.php.backup
/media/com_easysocial/apps/user/blog/themes/default/logs/title.featured.php.backup
06443 months ago
/media/com_easysocial/apps/user/blog/themes/default/logs/title.update.php.backup
/media/com_easyblog/scripts/legacy.js.backup
06443 months ago
/components/com_easyblog/views/dashboard/view.html.php.backup

etc.

Also does the .back files such as theme frost.back and wireframe.back are needed?

Lastly, would your recomand the use of Myjoomla.com? Can I trust their system?

Thanks