-_- you assumed my reference was Matthew 10, but I was actually looking at the verses from Luke 10, in which Jesus grants 72 disciples the authority to cast out demons, etc.
Plus, Matthew 17: 14-20 shows that exorcising demons will not work if the person performing it is not a true believer, making the activity also a test of faith. Is there any reason given that you would conclude the same doesn't apply today?
Plus, Ephesians directs believers to treat all people kindly, and hope that YHWH has mercy on them and drives demons out of them if need be. I view this as the same as any exorcism; they need not be elaborate and most of the ones in the bible aren't.
Plus, plenty of people do view these verses as commands for all followers; with such variable interpretations and translations, it can become difficult to have any certainty of what the bible actually says.