Also, what is self-indulgent and immature about accepting the job, and what is it about this particular Broadway show that makes you feel this is beneath them? The sentence you are responding to is horribly written and I apologize for causing confusion. I was editing it, and in terms of what they believe in and being self-indulgent, I forgot that I was no longer talking about the characters of Rent but Adam and Anthony in the sentence.
What I meant to say was that not that they can't believe in the message of the show, but as 30-something year-olds who originated the role more than 10 years ago, had success since then, and were able to play the characters on film two years go, I would think that playing these characters would be tiresome. It gets to the point where it's ridiculous to be screaming about not wanting to pay rent when you're taking this job to do just that. Yes, again, I know they aren't their characters and that they're only actors. However, people take jobs that interests them and that they can relate to, unless they're starving actors who'll take whatever they can get. Many Rent-fans have established that Adam and Anthony are not those people. So either Anthony and Adam are recreating these roles because they enjoy the characters and love the message, doing it to take a job and get paid, or believe their doing Rent-fans a favor by returning to these roles.
What ever the reason, I think it's funny. One is that they still believe in the message and like the characters, which is what I personally find sad. The other is that they're doing it to pay their rent which is funny considering what the show is about and what it means to people. And the third is them being self-indulgent.
Of course, the fourth reason could be that they actually like the music and material of Rent. If that's the reason, then there's nothing I can really say about it.
"I've got to get me out of here
This place is full of dirty old men
And the navigators and their mappy maps
And moldy heads and pissing on sugar cubes
While you stare at your books."