Again, just to mention this again. In the Catholic Church, the Charismatic Renewal is a spirituality, just like Marian devotion is a spirituality.
A spirituality is a type or tradition of prayers that people often used in their spiritual life. As such, people who prefer a particular spirituality, in this case, Charismatic Renewal, will come together as a group or community, in the parish, to live out the spirituality in their lives.
There are many such different groups in the parish, depends on its size.
Some parishes have big charismatic group, some small, some do not have at all.
Nobody is forced to practice this spirituality, much less to believe in it.
There is of course unreasonable attack on the Catholic Charismatic Renewal, usually by people from outside of this spirituality or those who do not know about what it is all about or just people who have a thing with Protestantism which they associate the Catholic Charismatic with. These are all unjust objection of course.
It can be true people think that the Charismatics think that they are more holy or more Spirit filled and probably they do brag and boast in the church, which made them a point of dislike for the others. These of course, are not the fruits if the Holy Spirit.
Generally the Charismatics are just renewed Catholics in their faith who find renewed vigor in their faith and who want to serve God and the Church.
God bless.