It is what it is. Fighters know what can happen, so I don't really feel sorry for him in that sense. It's the hazard of the job.
I like Hamill a lot, but he just hasn't evolved to where he needs to be. Jones was bigger, faster, stronger, with far better skills. Maybe some of us, myself included, were hoping to see Hamill finally surprise. But deep down, I knew he was going to get mauled.
At this point, anyone who thinks Hamill will ever be more than a mid-tier gatekeeper at this weight class, hasn't been paying attention. There's really nothing left for Hamill to do in my opinion. To be realistic, there's no title shot coming, ever.