He didn't play bad either. Especially when you consider that when he has made returns since 2010 they typically are very, very messy at first. It took him some time to get back to winning form in 2012/2013 and once he did he reeled off 8 wins in 15 months and became clear #1.
Since then there have been other issues but he finally was getting back on track at the end of the 2015 season -- not to elite level but to respectable tour player.
He will never be world #1 again, but maybe top 30 is a reasonable target.
Yesterday was actually a positive development for him, but haters gonna hate.