There are a lot of users (and potential users) that still use W7 (even XP). In the company I work for about 80 % of the OS are W7-64, there are one XP and one W7-32, only a few are W10.
- If you compile next release using the UCRT compiler they will have problems, unless the installer takes care of the needed MSW update.
- If you bundle the UCRT compiler, they will need to install the MSW update when deploying their software to pre-W10 systems.
IMHO, MSVCRT will be with us many years.