This is a sad commentary, Paidiske, and unfortunately, it is probably all too true across the board for various churches of whatever denomination.
For myself, I need no survey or panel to discuss this dilemma. I literally lived in it for a total of 16 years while our family were members of an independent church in the US that was cult-like to the core in its spiritual abuse. The men's meetings on occasion gave advice to other husbands on giving corporal punishment to their wives if they did not toe the line. The "pastor's" wife even wrote an editorial to our local paper, offering a defense of this. One member gave out samples of "dowry kits" for how to arrange marriages for their young daughters - of course, to other members' families of the same church. Members were strongly warned against sending their sons into the military. They were also strongly encouraged to purchase homes close to one another, so they could maintain close contact.
Attendance at every meeting was required, or the member was considered to be "forsaking the assembly", and could potentially be disciplined for it. No deacons were ever chosen who could have potentially challenged the one "pastor". If any matters of procedure were brought to a vote, every member had to give unanimous consent, or they would be accused of creating division among brethren. Fathers who had teenaged children members that voted against the church's decision were themselves accused of not keeping their children in proper subjection, and could be disciplined for improper parenting.
Eventually, the "pastor" fell into sin in the typical fashion, but after a period of a few years was re-instated in his position again. If any members objected to this, they were excommunicated.
A couple decades ago after our family got out, I heard of one young woman who barely escaped this church, and who had gone through a program for those who have suffered from abuse by cult leaders. She started a website that offered a connection for all those who likewise managed to finally get out or who were excommunicated and "disciplined" by being "handed over to Satan for the destruction of the flesh". Some of these had other family members that were shunning them and not allowing contact with grandchildren, children, etc. who were still trapped in it. This church is still in operation, with the same leader at the helm.
The purpose I believe God had in allowing me to wade through all that mess was so that I would never... NEVER... NEVER AGAIN trust a man in the pulpit against what my own conscience led by the Spirit and the Bible in front of me is telling me.