I think being “tempted” is only one aspect of what is appropriate to fill our minds with. I don’t want to clutter my intellect with garbage the same way I don’t want to sit and listen to the man next to me at a baseball game use profane language over and over. Doesn’t tempt me per se, but it has no place in my life. I know people who do not find pornography tempting, but that doesn’t make it appropriate. I think Catholic sensibilities go way beyond what make lead us to sin or tempt us, though that is a good starting point,