Since it is very easy to update Scala.js >1 and you can use all your previous libraries, most mainstream libraries are upgrading it regularly. For example cats, sttp, shapeless, scalatest etc. etc.
I don't see any reason for Laminar and its ecosystem to stay on 1.0.
sbt-tpolcat
url-dsl
to0.3.2
url-dsl
is already on 1.3.x