Well I do consider the journeys some take in arriving at the Catholic Church, where they see the church as all important. Some have been involved in the past with churches/denominations which are off the wall and or caused them great anguish...they then look for another to ease the pain and or disappointment they suffered, consciously or not it does seem to be a standard for some. Then it is not at all uncommon for them to lash out at the other faiths which harmed them. That happens when one puts too much faith in the church they attend...... Unfortunatley it is a false safety as ones security lays only in Christ and His word...never a church organization.
I converted from the Russian Orthodox Church and love it. It would never occur to me to “lash out” at it. I denounce Protestantism because it is wrong, not because it did anything to me.