I just installed Pharo & Squeak and my first impression is rather bad. Nothing screams ancient / unmaintained / not production ready / shitty like no support for retina displays. It has been 6 years since retina displays were released and they should really be supported by now.
This has been listed on https://github.com/pharo-project/pharo-workingRoadmaps/blob/master/Pharo7/RO... for quite a few years, but apparently nothing has happened yet. From a user standpoint, this should be of really high priority in my opinion.
Sorry for popping up here and criticising. Just wanted to provide my experience.