Pentecostalism is an exciting religion. It runs on high emotion and the sensation that one is filled with the Holy Spirit. There is singing and dancing and a loose structure to worship and a sense of community.
This is true for some. But some Pentecostal groups like the Assemblies of God stood by the Catholic Church when we were getting slammed by Obama. There is a solid core there, though I am not sure if it will stay solid long term.
When I was in the Catholic Charismatic movement around 1980, I sometimes visited the nearby Assemblies of God Church. The pastor was a very effective preacher, not only in style and delivery but also in content. He constantly emphasized what CS Lewis called Mere Christianity, the common doctrines for all Christians.
This was at a time when the diocese, and nearby parishes, were pushing the peace and Justice position of the Democratic party and secular media, and no doctrine.
When the Pentecostals did “Communion service” it was more reverent, more focused on the Crucifixion, our sin, and forgiveness, than the nearby Masses. People actually cried.
But the RCC is “self” correcting, though not really “self”. The liturgical abuses disappeared. Most liberal clergy died, with no young replacements. Some doctrinal priests emerged. I knew this would happen, so I stayed RCC.
Protestantism is not self correcting.