That opinion is what scared me away from Eve for 9 years. I really wish I didn't get misled back in the day when I was learning about Eve, because I think Eve would have been a perfect fit for our crew. I started playing Eve once I got out here to Iraq because it is the complete opposite. It is probably the least time demanding of any MMO I've played. All the training is done while you're offline, in real time, as well as the building. It does take time to mine/transport, but you can literally be AFK for a lot of it, so it is a very relaxing MMO for most of the industrial content. It is the kind of game you can be "playing" while you play another more active game (half the guys I play with play Diablo or WoT while they play Eve) or watch TV, read a book, whatever.
Obviously the PvP is not like that, but I haven't done much of that. I roll with an industrial corporation, and although I'm 7 hours ahead of most of the members, it doesn't matter because of the mechanics of the game. I can log on every few days or weeks and queue up skills to train and when I have a few extra minutes of time, I log in and queue up building jobs. When I have 20 minutes or more, I can head out to the astroid fields and mine a bunch of minerals. We all dump the minerals in the equivalent to a guild bank and all pull from that pot of materials when we build so we are working together, even though we aren't online at the same time. There are certain people that love "playing the market" like folks that used to love the AH in WoW and they handle selling all the stuff that we build and at the end of the month, we all get a big paycheck. I "play" about 2 hours a month and have had an account for like 8 months or so and I have like 10 ships and almost 2 billion isk. Because of how the skills train, someone that played 80 hours a week for the last 8 months didn't progress any more than I did (though he may have made more money than I did).
The main barrier is the steep learning curve (or so the Eve crowd likes to think). Us, coming from many years of MMOs, I felt like it was easy. I did have a good crew of folks to ask questions of, but I don't think our crew would have any trouble learning the game. After that initial curve of learning (week or few) it is fairly smooth sailing and a matter of being patient while you train up in the essential skills that will open up your profession.
To get back on topic, since there are no skills to train and no levels, I don't see Star Citizen being a time sink at all. It will be like logging into a persistent world first person shooter. Our main challenge is that we'll need to be online at the same time to work together on stuff. We'll need some folks with "freighter" type of ships and others flying escort/fighters if we're going to go that route or we just focus on nothing but combat, but either way, it will require folks to be on at the same time to be effective, and most likely a larger group then we have alone.