You cant figure out how those kinds of requirements might influence or curtail development in the non touch parts of the system?
We saw the same thing happen with mobile first on websites.
Have you found some kind of performance or other detriment of the mere support of touch screens or is this just theoretical?
The introduction of the mouse led to developers paying less attention to keyboard shortcuts and function keys, but I don’t see anyone seriously saying computers should not have mice.
Or for that matter, that adding support for game controllers (something that has actually happened with Linux desktops) would led to curtailed development of non-controller parts.