You would have to know how SteemConnect v2 works.
You use the active/owner key to split your posting auth. Then the decentmemes.app can post without your key. If you wish to prevent it from having that ability you can use SteemConnect to revoke the split posting authority.
DecentMemes never gets any access to any keys.
It works perfectly @netuoso Thank you.
Good to know, thanks. Looking forward to using SCv2 in some project sometime.