It's an opinion, and you feeling no particular way about it is equally valid.
But I did justify and maybe to reword slightly, surely if one of the main drivers is opening up research, the brand name should be something that's less obscure and more accessible / understandable as to what it is on first sight?
Maybe arXiv evoking the word 'archive' with an ancient Greek twist does that for some, but it's clearly a bit cryptic for many, and if the point is to open up probably the brand should just be something much plainer.
I've never even connected the 'X' to the Greek letter chi. I just kinda accepted it as one of many groovy web 2.0 misspellings in search of a domain and trademark.
No, it's to be a pre-print server. If someone doesn't know what that means, then they shouldn't be using arXiv.