The fact that Kotlin doesn't have an official open source LSP in this day and age, in addition to related tooling, forcing you into a single not particularly open IDE ecosystem, and the fact that the developer company straight up said its purpose is to drive up Intellij sales, makes me very apprehensive about it.. good syntax or otherwise. Even Java doesn't come with as much of a vendor lock-in, and I woudn't wanna touch that either.