I don't think giving them to current or past bitcoin owners is a very interesting distribution mechanism and honestly I don't think it's fair. In Freicoin we're researching alternative distribution mechanisms different from mining subsidy but this one doesn't look very good to me.
Apart from that, the fork itself it's interesting since ethereum is distribtued as free software and aethereum developers and users don't need to pay anything to ethereum developers or "investors"/speculators.
One could argue that ethereum is somehow protected by the network effect of being the first, but aethereum could be launched just about the same day or even earlier.
The fact is that the ethereum team is trying to monetize so called "intellectual property" (property should only apply to scarce goods and not infinitely reproducible ideas) the wrong way and aethereum shows us this.
If no one has done this before with ripple.com or mastercoin, for example, maybe it's because no one saw their designs as particularly brilliant. For example, ripple.com has several design flaws that wouldn't be there if they had read Ryan Fugger's
2 phase commit protocol with more attention. mastercoin repeats some of the mistakes like having "accounts" for which transactions need to be serialized and I doubt they've even tried to support ripple-like transitive transactions (atomic trades involving an arbitrary number of different assets).
I think starting from scratch is an unnecessary luxury that fragments development and duplicates costs, that's why we take the opposite approach with Freimarkets, designed as a set of extensions on top of bitcoin design/code. And although I doubt about the need of some ethereum's constructs like agents (I believe any functionality that can be provided by so called DACs can also be provided by "regular" smart contracts if the scripting language is powerful enough), I respect it as another technical approach.
So maybe it was interesting enough to be forked and clearly see that so called "pre-mining" is not a good funding model and you actually need to convince future users (individuals, businesses and/or other organizations) to fund it without promising any other return that the software itself.
As a suggestion, I would also get rid of the "anti-ASIC" bullshit (any software algorithm has infinite hardware equivalents and one is simply going to be more efficient, period) and just merge mine SHA256 with bitcoin, or at the very least, merged mine Scrypt with Litecoin. It's just getting a little more security for free (no, although namecoin is more secure than it would be alone is NOT as secure as Bitcoin, simply because it's reward is smaller and it's cheaper to reverse its history). There's no reason not to do it.
Having the same set of features that ethereum but with better security could actually turn the network effect in favor of aethereum and against ethereum.