Seems a lot like the Powershell model, which I have mixed feelings about. It's nice for shell scripts, but it makes day-to-day usage cumbersome. I think you can actually use Powershell on Linux, but I'm interested to see where this tool goes.
How? `ps | kill node`. No pgrep hack because ps output a list of processes, not a line of text. As a Unix person Windows Terminal and pwsh is where I spend most of my day.
This is common misconception. Posh allows both verbose and shorten styles via various mechanisms - command aliases, parameter abbreviations and aliases, proxys, pipeline settings for objects etc.
If the above characterisation is right, it is a middle-ground between Powershell and traditional methods.
Also, this is not introducing a new shell language.