I work on large (everything is relative, though) monorepos, that would probably qualify for this limit, and I remember already did the kind of "workaround" discussed in this issue years ago on this device. I think it's hard to blame the software when the default file limit is so low depending on the languages you work with.
Anyway, if you would encounter this problem, you would have already encountered it with other tools, or else this is fine.
If that ever gets fixed then I'd look at replacing Sublime (which is still my go-to for quick editing) and then see if it can handle more advanced coding (which one the rotating list of various vscode forks handle today)
It's been over a decade now since I managed the truetime team at google, things may have changed since :)
This one is amusing, and as another comment mentioned below, large companies are awful at accepting patches on github. Most use one-way sync tools to push from their internal repositories to github.