Having confirmation dialog confusing to new user
The executable permission and open with context menu is already doing this job for most people
Having a "do not ask again" doesn't help much either
Let's say, if the user click open the first thing they see is a confirmation dialog
Like most people having to do it everytime they run something on his own computer sound annoying
they will click the "do not ask again" checkbox as a next step
because most people read left to right user will see "open" first and think "open" has the same meaning
as "run" or "execute"
the file will open in a text editor, the user is confused and next
the user will search for a solution and find out than in order to run a script you have to enable execute permission
the user open properties dialog and found out that the executable permission is already enabled
the same user will again search for a solution and find out that he have to set the behavior for script execution as open
for a first time setup this behavior consist of too many steps
This is a nice feature as I'm using it myself but i think it should be opt-in and remove the "do not ask again" checkbox along with it if the former was possible would be a great addition