Why should someone not in a religion care how that religion defines things? I'm not quite clear what you're trying to say here.
In Egypt, the rate of wearing some form of veil went from almost zero in the middle of the 20th century to 90% today. For the most part, that trend is enforced through various degrees of social coercion.
It's not just apostasy that's considered punishable by death though, "encouraging it" is too, AIUI. So what proportion of those people are just scared that their objection to death penalties will be considered to be support for apostasy and so they'll die. I mean who would answer "no" if there's any possibility that it might lead to your death or even just the persecution of you and your family?
"There's no compulsion in Islam" every Islam supporter online tells me.
So what? Why should I care? What point are you trying to make?
That is, in fact, exactly how it’s defined within that religion. Also, using Egypt as an example is deeply ironic: https://m.youtube.com/watch?v=_ZIqdrFeFBk