Paul is pretty clear on the subject;
1Cor 12…
27 Now you are Christ’s body, and individually members of it. 28 And God has appointed in the church, first apostles, second prophets, third teachers, then miracles, then gifts of healings, helps, administrations, various kinds of tongues. 29 All are not apostles, are they? All are not prophets, are they? All are not teachers, are they? All are not workers of miracles, are they? 30 All do not have gifts of healings, do they? All do not speak with tongues, do they? All do not interpret, do they? 31 But earnestly desire the greater gifts. And I show you a still more excellent way.
The whole chapter revolves around diversity within the body of Christ. If everyone spoke in tongues there would be gapping holes in the body. I wouldn’t put too much stock in what they have to say regarding this. Also, I’ve never heard anyone speak in tongues legitimately. It’s usually some form of babbling and incoherant noises. True tongues are a language that you don’t know for the edification of someone else…hence the interpretation of the tongues…Paul says that if there is no interpreter then the person should stay quiet…just my 2 cents…