Sorry Paulo but that doesn't fit with what I read and saw photographic evidence of.
Believe me I know very well of what I am talking about. One keel fell off
and all the Match 42 were reinforces under warranty at that particular hull point. I had a Bavaria at that time and IO have followed all that with concern.
If you search the net you can find all the story and will find that the problem was only with the Match 42. All were reinforced after but only one keel feel off. There is no other problem with a keel on a Bavaria and none on the "normal" line, the cruiser line.
Since Bavaria makes for here more than a 1000 boats, we are talking about 15000 boats in the last 15 years. That's a lot of boats and the same way we knew of that particular problem, if more problems had happened we would know of.
You should not make that kind of statements without being sure.