When "their beliefs" constitute the massacres of innocent men, women and children as part of their 'tactics' to wage war against the State, when their beliefs constitute medieval, intolerant and hateful laws that treat all save those who buy into their hate and intolerance, then it is indeed safe to "judge" their beliefs.
You cannot use the excuse of "we should not judge someone's beliefs" when dealing with mass murderers, rapists, pedophiles and hate-mongering bigots - their 'beliefs' absoultely need to be 'judged' and they need to be severely punished for them.
Unless the individuals are "known criminals and/or terrorists", they will not set off "red flags" when applying for visas to work (or visit) in the gulf, given the existing large numbers of workers in the Gulf from the tribal areas.