Safeguarding has always been a rather patchy business in churches, but it tends to get considerably weaker the more charismatic the leaders get.
The very first church I attended was a Baptist church, and they have pretty good accountable leadership structures. The minister is trained to a recognised standard, the deacons and elders are elected by church members, and major decisions are discussed and voted on. I went from there to what was known in the 90s as a "house church" or "new church", where absolutely none of those safeguards existed. The leaders were young, self-appointed and had no qualifications, beyond being "called by God" to lead. Their decision making processes were pretty much hidden away in secret, and they had pretty unlimited power to do what they wanted, and treat church members however they liked. There were no checks and balances at all. If you questioned anything, it was seen as turning against God's will. I only properly understood the very serious implications of this years later.
This is precisely the sort of environment Mike Pilavachi would have been operating in.