Obviously starting the app is going to take longer, especially from cold, but if you ignore things like DNS resolution and download time then 200ms is more than enough for most things to get from 'downloaded' to 'interactive'.
Typescript I think? Anyway, much as Microsoft has done an amazing job with VS Code, it really doesn't have quite the snappy feel in all circumstances of a native app. Extension loading on start up is one example. If you use a keyboard mapping extension it's quite possible to start typing on launch and find the mapping hasn't kicked in yet.
That's not to say it isn't worth the tradeoff. The costs are inconsequential, and the benefits great. I'm mostly an IntelliJ Idea user, but the sheer speed with which VS Code is developed often tempts me towards it (eg. it's well ahead of Idea on wsl integration)
I personally wouldn't want the developers of the software I depend on most to waste resources speeding up something of such marginal significance.
[Edit: an instant-start editor for config file, vim commit edits etc is of course crucial]
In this reality, however, I would already be happy if tabs in a browser could load that fast, so I wouldn't have to keep hundreds of them open all the time.
Here's a list: ranger, urxvt, sxiv, w3m, xev, vim, feh and qutebrowser.