Let us tell the problem another way :
In terms of electronic warfare, the more data you can collect on a system, the easier it will be to analyse how it works, and eventually jam (or counter) it.
Viewed from the opposite side, you must avoid to use your EW system too often.
For instance, during exercises such as Red Flag or others, most EW systems work under "specific conditions" so that nobody can collect significant information on them.
So trying to jam "just for fun" a Destroyer is not the most clever thing to do as the EW officier of the ship will certainly record the signals and you can be sure that those records will be carefully analyzed with care and exploited with love.
At least in the early 90's, tempting the other side to make "full use" of their system was a great ELINT game !!!
I don't think that ARM are very much used nowadays, modern doctrines consist in obtaining the coordinates of the target by other means and send "there" all kind of bombs ...