It matters because if it "invades" your distribution of choice. Imagine you've been useing a distro for years and grown to love it and now systemd is being forced upon you of you make the next major upgrade.
Like ELF, glibc2, egcs, devfs, hotplug (the old script-flavored version), udev, eglibc, etc.
I am mentioning these, because all of them caused a controversy with a vocal minority. It is evolution. None of these are controversial anymore. Some of them were replaced, because they were bad ideas in hindsight (devfs).
By definition any fundamental part of the system (such as init or the C library) that changes is 'forced upon' the user.
Your quotes around 'forced upon' make it seem like it is not really being forced onto users. Gnome users for example are getting shafted now that systemd is a dependency for the gnome DE.
Like ELF, glibc2, egcs, devfs, hotplug (the old script-flavored version), udev, eglibc, etc.
I am mentioning these, because all of them caused a controversy with a vocal minority. It is evolution. None of these are controversial anymore. Some of them were replaced, because they were bad ideas in hindsight (devfs).
By definition any fundamental part of the system (such as init or the C library) that changes is 'forced upon' the user.