The workarounds for this are so straightforward that it’s unlikely you really need this added to the app.
First, if you don’t want to type on either platform, the simplest solution is to stop using the type-answer functionality in your card templates.
But if you want to type sometimes on desktop, you can leave your card templates as they are. Then, when you don’t want to type an answer, just don’t type. Ignore the type answer field and just proceed through studying the card.
The reasoning for having a switch to disable the feature on the mobile apps has to do with the intrusiveness of the on-screen keyboard, especially on smaller screens. But there’s no such concern in the desktop app.
If you have some other use-case that you feel can’t be addressed by the suggestions above, please let us know what that is.