RubyUI, formerly known as PhlexUI, is gaining traction among developers for its capabilities in Ruby projects. Comments suggest the RubyUI team is well-regarded for their contributions, with users expressing that this gem has become essential in their toolkit for new projects. While the gem's advantages are recognized, some users are voicing a need for features that allow aliasing component names to avoid conflicts in the global namespace. The overall sentiment showcases excitement in the Ruby community about the potential applications of RubyUI.