Earl's skills are undeniable and he can still find that special gear every now and then, as could a Sigel or a Varner even now. That said, I watched his play live at Turning Stone, so I'm basing my comments on what I saw first-hand. I'm also taking note that a few years ago, any match in which he was playing drew a whole host of onlookers and this is no longer the case.
Yes, he quit in a match at Turning Stone after committing an unsportsmanlike conduct violation in which he would have trailed 5-4 to Bucky Souvanthong had he had played on, but his physical attack on Hunter Lombardo a year ago was overlooked, so one must assume that this incident would be overlooked, as well. Earl is never held accountable for misbehaving, so why would we expect it now?
It's OK to say that you still enjoy watching Earl, and you're not alone, but it's equally true that Earl has basically disappeared from the pro scene and no longer competes for his living. He skipped every Matchroom event this year, even their premier event, the World Pool Championship, so why should he be included in a Matchroom Invitational event that rewards year-long excellence.