Is anyone else annoyed by the behavior of some of the Finnair passengers.

This month:

• On a HELLHR A350 flight, a group of men turn the business class into a bar setting, standing up most of the flight in the mid cabin.
• On a MUCHEL flight, a passenger in economy does a self upgrade to business, rushing into the front cabin as soon as the safety belt sign was turned off. And he stays there for almost the entirety of the flight, returning about maybe 45 minutes before landing, bragging to a fellows passenger how he's spent the flight drinking champagne in Business.

I have raised this subject with some of the pursers, and it seems that this behavior is tolerated because of the customers' status. This is apparently because the crews lack any support from Finnair, when they try to enforce the policies. Seems to me, there is very little consideration for the other passengers who might by annoyed by this kind of behavior. Has anyone ever given any feedback to Finnair? In my opinion, the crews need more training and more support from the company, so that they can deal with situations in a friendly and effective manner.