Are there people that fake a spiritual behavior?....I don’t doubt it for a second. A spiritual pastor knows how to handle it.
But, also keep in mind that when the Holy Ghost fell on the 120, in the upper room, they were praising God in languages that were not their native tongue. Was that any reason for the onlookers to accuse them of being drunk? I think that their praise must have been exuberant and joyful.
God doesn’t do things without a reason. The “foreign” languages weren’t foreign to those that spoke that language. The purpose of different tongues is to communicate to those present that speak that different tongue. God confused the languages at Babel and He can un-confuse them at His desire.