Wow!
That's huge and probably erroneous broad brush.
Most are probably from mainline, liberal infested churches.
Some of the mega churches do a very good job. They are not for me; as community with other believers would seem to be impossible in these churches.
You’d be surprised. Many of these “rumba” Pentecostalist/Charismatic Churches in Latin American are poaching on Catholics with an entertainment brand of “Christian Lite.”