One of my takeaways from listening to a lot of Telltale (an ex Jehovah's Witness atheist channel on youtube) was that the stereotypical charismatic Christian glossolalia is probably a learned skill. I have heard that people who left these groups are still capable of exhibiting it on command.
I have not actually met an ex-charismatic who could demonstrate this to me, but I would be interested in meeting one. I have never done glossolalia myself, I always thought there was something off about it. I have been at a charismatic church where people were practicing it. I was relieved that they were not extremely loud, they weren't rolling or flailing around, but I admit I found the audible chaos of it somewhat unnerving. I've heard charismatic Christians speak of the presence of God, or of spiritual power as a feeling of "electricity" or tingling. It seems to me that a major aim in that movement is to feel highly energized.
I ended up in a faith tradition that has a difficult but slow, calm, scripted practice, one that evangelicals would be likely to call "vain repetitions". I think the accusation could stick that I badly wanted some beauty and order. I believe that the gift of tongues is experienced as a miraculous automatic translation in the spoken word; we see it as a reversal of what happened at the tower of Babel.