This link jumps to the actual beginning of the talk, skipping the preamble which is mostly specific to RSpec, focusing instead on the crisis the Ruby community currently faces[1] and the opportunity / responsibility the community has to respond.
[1] namely that the shiny newness of M.E.A.N. and Node/React/Angular plus the widely discussed performance challenges of Ruby & Rails have put Ruby + Rails on the back burner in the zeitgeist.
"Google is not gonna drop Go. Unless they feel like it." g