By "do the event" do you mean "obtain top tier loot"? I mean stuff on par with empyrean gear? If that's what you mean, then I have to disagree. If you mean that they should be able to enter solo and slowly work towards their goals without relying on the help of others, then I agree. I don't think that everything in the game should require a group. There should be easier (but still meaningful) goals that people can reach by themselves, and harder(but proportionally rewarding) goals they can reach with the help of others.
But I don't believe anyone should be able to advance in the game while riding on the coat-tails of an organized group that doesn't even want them there. Because you know what's worse than not being able to do something on your own? Doing all the work and having some random tard show up, make it harder for you to succeed, and then get an equal chance at the loot he did NOTHING for. It doesn't just ruin your day, it ruins the day for you and the 12 friends you organized to get a fake empyrean for complete strangers.
It is my opinion that WoE was the single most exploitable event ever made in FFXI. It's as though SE one day said "Yeah, kill stealing is neat, but is there some way we could actually make strangers capable of stealing loot out of the loot pool they did absolutely nothing to help produce? Because that would be awesome!" On a similar note, I dislike the loot pool system for campaign, but that's a topic for another thread.