[headius]

I wouldn't say TFA is lying but it is presenting only part of the truth. MRI does have an actively developed test suite, which they run in CI and which we use to test compatibility in JRuby. MRI has contributed to RubySpec in the past and many contributors I know stopped (like I did) for nontechnical reasons. They are not ignoring it, but it is a hard project to collaborate on given the attitudes of the project lead that should be evident in this post.