It's nice that you can send vitalik eth to vitalik.eth, but what about the 10000 other vitaliks out there? Are they supposed to be vitalik_4591.eth, the_real_vitalik.eth, etc?
they can pick a different name, i don't really understand what solution you are advocating. that no one can be vitalik because there are more than one?
I'm actually not advocating for a solution, because I don't know of one. My point was only that OPs statement of "ENS domains are memorable" is only true for early adopters. Later adopters won't have that luxury. The same thing played out with the .com domain, which is why so many companies use non-.com domains these days, because it is not straightforward to get a memorable domain in .com.