The rant is mostly about the Scala collections API. I think the &quot;expert&quot; opinion is that yes, Scala collections are broken and incredibly complex, and theres a proposal for new implementations here:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;lampepfl&#x2F;dotty&#x2F;issues&#x2F;818" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;lampepfl&#x2F;dotty&#x2F;issues&#x2F;818</a><p>I think the talk was pretty influential, but atleast the community is responding. I don&#x27;t think it spells doom for Scala.