But whatever...
The merits of ES6 are also present in typescript. Thus claim 1 is immaterial.
Claim two is rebuked by intellisense and very strongly argued against in a shared-code world.
Claim 3 is presumptive that TypeScript would be the only transpilation, despite nue itself being a transpiler. In addition to all the other bundling modern products use for treeshaking, minification, etc. This is an insignificant and thus immaterial point.
("justification" enough for you?)
Did you even read the FAQ?