This executive order doesn't change anything about that as far as I can see. If the president says the law means one thing, other executive agencies have to follow that interpretation - but the courts will still do their own thing, and a court order is just as binding whether you agree with it or not (and indeed whether it's legally correct or not).
Before this EO the executive branch policy on court orders was "always listen to them." This EO changes that to "ignore court orders if they conflict with what the president wants"
How? Court orders aren't a matter of interpretation of the law. Agencies might follow interpretations of the law that blatantly conflict with court orders when considering matters not directly covered by those court orders, but they've already been doing that for decades, the EO doesn't change anything about that.
The question of which federal laws to enforce is indeed controlled by the president. That's already normal and has been used by many presidents to de facto change the law (e.g. weed non-enforcement, various immigration amnesties). But that's got nothing to do with court orders.
> The executive shall enforce orders, because it is bound by laws to do so
No? They don't do their job because the law compels them to do (often it doesn't, e.g. the police don't have any positive legal obligation to make arrests or what have you). They do their job because it's their job.
