Is this plugin still safe?

Reading Isptenu – Mika’s post it seems as long as you have the old version or have done the update to 2.7, you are safe.
I use this extensively on a site that is very busy at the moment, I can’t attempt a change at this time..
I downloaded and used Display Options and used their migrator on a little site.. the migration didn’t really happen.
Just wanting to be able to continue to use this plugin until I have time to change it out.
Will my sites be safe?