This is a bog standard LAMP setup, they just specified the specific php modules which might not be enabled by default (but usually are). Not sure what's complex about it, I'm sure you can drop it into a default XAMPP install and run.
You can ;) We are not losing sight of the lowly shared hosting users. The only tough requirement - which many shared hosting companies already provide - is commandline/ssh access so you can use/install composer.
