Yeah, but it’s not automatic. Unfortunately, you have to apply for postponement. That’d be up to him to make the decision on if he would or not. There’s a lot of pressure and he could face backlash, but I hope if it’s what he wants he doesn’t let anything stop his opportunity.
This law is not exactly new, it was reintroduced this year, there's plenty of idols who were able to postpone with no backlash and they were nowhere BTS's level, only haters doubt their influence at this point. If they're going to enlist at all they're probably going to do it in the second half or the end of the next year. They are booked for the rest of this year, plus they have a comeback lined up and possibly a tour for the first half of 2022.