this doesn't really seem to be a unique feature of 'lispy' languages because the overwhelming majority of languages does not have wide adoption in the market.

The reason why adoption concentrates on a few languages is mostly network effects rather than objective features of the language itself.

Maybe it's time for us to think about how to increase the adoption of languages rather than trying to bolt every feature onto java just because there is a lot of java code and devs. We're going to be stuck in a never-ending mess of complication and legacy.