The director's decision is exactly the same as the one that the National Labor Relations Board reversed in 2015. But a lot of people think that the Board will affirm this time. The Board does not respect its precedents anywhere near as much as a court does. It may think that the landscape of college sports has changed enough that it should come to a different result than in 2015. If it does come to a different result, then student-athletes can organize and then negotiate a collective bargaining agreement with the NCAA.
I should add that the NLRB's final decision can be appealed to the federal courts. The NLRB will be overturned if either a court thinks that the federal labor laws prohibit treating student-athletes as employees, or if a court thinks that the NLRB's decision is not the product of "reasoned decisionmaking." That means that the NLRB has to show a good reason for changing its mind if it doesn't follow its 2015 precedent. It doesn't have to show that this decision is "better," but only that it's reasonable to take a different approach than in 2015.
I'm not sure if that answers your question, so feel free to respond if you think I didn't.