It's a genuine question, how many times would you say a member should be warned before being banned? 
The vast majority of valuable contributors who post large numbers of reviews do not go looking for trouble. There are a very small number who rather than stick to what they do best, decide to push boundaries and break the rules.
Versace has previously received at least one temporary ban in the past (and I think it may be two?) for either acting as a moderator or criticising one.
Many years ago on another forum to which I made a huge contribution, I had a confrontation with a moderator who I knew had misunderstood me. He banned me. I complained to the owner asking to be reinstated based on my contribution and that I could demonstrate the Mod had made a mistake. He pointed out that whilst he found my contribution valuable to him especially, it was irrelevant to the discussion. He also already knew the Mod had made a mistake and misunderstood my comments, and had discussed it with him, but if he didn't change his mind he would always support his mods decisions.
He was of course quite right on both counts, but I was 'so far up my own' I thought otherwise. I learned my lesson that day that I was not as special as I thought.
Most members don't need to be taught this lesson about forum moderation and rules, but a very small number do not understand the reality and Versace is/was one of them.
EDIT ... just to clarify I am not saying in this instance, Davie has made any kind of mistake