You know...

There's a large difference between something which is "nice" and something which is good or helpful or true. I'm going to go out on a limb here and guess that you may be someone who doesn't take constructive criticism well, from anyone. However, in training for this career, there comes a time when you get over being offended by criticism and take it eagerly, because you genuinely want to learn, and you've pulled your head sufficiently far out of your posterior that you can understand that there are people in this business who have things to say that will help you.

I don't know who Cindy is in real life. I don't know who she works for or what her position is, and I may well never know. What I do know is that she's hearing auditions, not singing in them, and therefore must be a fair step ahead of where I am. In my opinion, the fact that she's sharing her insight here at all is "nice". Really nice, in fact. It's not something that she needs to do or only does to make singers who've committed these errors feel terrible about themselves. I'm pretty sure she hasn't been in on auditions of yours and is therefore attacking your rep or clothing choices. She's offering worthwhile advice. I don't know if you're aware, but the advice of people like Cindy generally costs a fair bit, and here we're getting it for free. If that's not nice, I'm not sure what is!

People make mistakes in auditions. Big ones, like massively inappropriate attire choices, rep from seven different Fachs, enormous protocol blunders. This isn't med school, where everyone basically goes through the exact same thing with a phalanx of peers having the same job interviews; our paths are rather more individualized and diverse, and it's therefore less easy to figure out the exact right things to do in some of these sitations. You can quibble with Cindy's wording choices, but I'd frankly advise against it. No one is here to make your career happen, be your best friend, or babysit you through your own (myriad, might I point out) protocol blunders on these forums. The fact that there are pros in the business willing to share from their experiences in a free, open venue like this is something singers didn't have before the internet was around. I also don't know Susan personally or professionally (though I hope to change that at some point!), but from my observations hereabouts, it would seem that she is also a person of considerably greater status (and influence) than I am, and I would say warrants being spoken to with respect.

I also don't know who you are, but burning your bridges is a dangerous game in this business. People talk, and the internet is not as safely anonymous as you may be thinking. People also have long memories, especially when it comes to people who have been particularly obnoxious. If you're going to start lecturing your betters on the importance of being "nice", I would recommend starting with the concept of "civil" and applying it to your own comments before you start whining at others to sugarcoat their comments for the sake of your delicate sensibilities.

I'm sure you'll say this was far too "harsh", too. And while I may be Canadian, I'm not apologizing for this. Consider it a favour and take it for what it's worth.