Seeing that both Eclipse and Netbeans are now more or less dead (and speaking as a long time Eclipse user, from the very first version to around 4), yes, first class vendor-direct InteliJ support is more than enough. And more than most languages (including Groovy) ever had.

>As for Kotlin/Native, there is nothing to worry about versus what Go, Rust, C++, Dart, D, Nim offer in terms of performance, libraries and in some cases tooling.

IMHO, Rust will always be kind of niche as hard to tackle, Dart we'll see, D never went anywhere, and Nim will remain niche, it's a little too idiosyncratic to catch on.

Kotlin is already more popular than all of the above except perhaps Go.

>Fuchsia is being written in Go, Rust, C++ and Dart, with the team now hiring for node.js support.

Fuchsia is still vaporware or at least irrelevant. It's not even in the market yet. And the fact that it's written in 4 (and looking for 5th) languages doesn't really bring much confidence.