In general (and not referring to ED here), I think it is understandable in a case where people who cheat aren't punished and you have to compete with them.It is somewhat rather disturbing that people feel the need to be compensated for being "good".
But as someone pointed out, ED isn't really a competitive game and it doesn't really matter much how much credits the other CMDRs have (outside possibly FDev having to introduce higher prices for new content).