I think the second part of the comment is what’s important:
If you are in a more comfortable environment you will be better at working
Maybe that is windows for you. I have barely ever used windows, so the concept of searching for installers online and running them just seems clunky and time consuming to me. It’s just not what I’m used to.
However if you are willing to learn multiple systems, you might find that one is better than the others.
I think the important part is that the syntax will become standardised, rather than being defined by microsoft/typescript, potentially allowing for alternative implementations. It could also make the build step optional in some cases, which is something people dislike about typescript currently.