I like mindel and BT, I really do, but they really brought this on themselves. You ask why the admins didn't keep it to PMs, but if they get called out and questioned in threads, if they don't respond in some way it looks like they're out of touch.
Granted if all they respond with is "BANHAMMER TYM!", that isn't good, but for the most part this isn't happening. DF especially is reasonable and communicative and always has been, replying to my PMs with stupid questions over the years. And she's not the only one I have experience with. All the staff members I have talked to have been nothing but helpful when adressed in the appropriate way.
Mindel's thread was a direct and personal attack on kao, belittling and mocking. The only thing acomplished by raising the tone of an argument is forcing the other side to raise the tone equally. For example, if you argue with someone and start to shout, they are likely to shout back. Common sense etc.
On the other hand, kao tends to be a little colder than the other admins, and doesn't bother to try explain himself in threads if they are just rants. This is his choice though.
Mindel and BT both mentioned how it's the admins role to change for our needs, but this is a community with hundreds of posters and readers. They can't change the rules for one persons disatisfaction. The world doesn't work like that. You know what you are paying for if you are buying premium. Just because you are giving this site a few dollars a month does not give you the right to demand a change in the way it is managed.
Like I said, we all come here, and the way the admins should work is as they see fit for the good of the community as a whole. And if you disagree with the way things are run, PM them. Like it was already said, making a thread in a public forum is like shouting at a cashier in a supermarket. It's just breeding bad feeling between the community as a whole and the admins, who for the most part just try to moderate arguments and prevent things from getting too heated.
Hope this doesn't go on and on... And realise the irony of hoping that and making a post like this...