@Jip once again did not get the gist of the impersonation part. Noone is saying that everybody should be completly free to take on the name of someone else. Look at the example of the name TheWheelie. Everything is fine until Farms says he is not fine with it. Then this is a completly different scenario, because then it is harmful (or whatever you want to call it). But as long as its all in good fun, where exactly is the problem?
The "biggest" counter argument is that people get confused. Ah yes, every player must at all times automatically know who someone is. As gieb mentioned in his post, might aswell remove rename altogether (i don't even have to talk about how ridiculous that is).
Of course i get what you are saying Jip, wouldn't it be great to know everybody instantly based on their name? Unfortunatly / fortunatly this is not the real world.
Jip accusing everyone who is disliking this change of not seeing this objectively. I personally do not see the point of this extensive change. Just get rid of this rule and only disallow "impersonation" / renaming or whatever when the "original" holder is NOT fine with this. (you do not even have this in other communities, literally nobody cares until something malicious gets posted which is something else entirely)