I don't think the account that's used should matter. If you're going to reveal your real identity that's good enough. Look at Decred, we know a lot of people were involved in Its development for years, but they still did their ANN with a noob account just called "decred"
Substance, intent, and active development/support are the only things that truly matter.
It is possible to do a coin successfully with a newbie account. It is just statistics are against it. Most of the time newbie accounts are used because the dev does not not want to ruin his main account. Imagine if a dev uses his main account (with this I do not mean real identity, just his main account that he has been building up over time). This would improve trust and chances of success greatly. If a dev insists on using a newbie account, then there must a reason for it and then the community will take that into account with their risk assessment. It will be a sword over his and the coins head all the time. Chances are very good for a newbie account that such a coin gets dumped by the dev when listed. Even if a dev has many coins (which is perfectly alright by the way), using his main account will improve trust that he will not just dump and that is all assurance that the community needs.
The risk is that the coin will be listed on an exchange before the things that you mention will happen (development etc.) The dev is going to put everything into the coin in anyways to make it a success right? Then use his main account. It is not an unreasonable request.
I understand your concern about his Newbie account, but you really should be more respectful. Not every single person that is involved with BTC sits on bitcointalk all day posting on random threads. I'm proud of you for having achieved Hero Member status as I'm sure you worked really hard to attain it. Just by looking at the website and wallets you can tell Mr. Marten did not just slap this thing together willy nilly. Moreover, you can tell by his use of the English language and his firm tone that he is serious about what he is doing. Please do not bring your childish petty rants into this thread anymore because it will only make you look like a fool.