Use the phone to inquire about the post pandemic schedule of these shuttles. The link is broken (Oct. 5).
A shuttle system with signup sheets is preferable so you don't get stranded at the park late at night because the last shuttle was too full.
While you can walk to Disney Springs and catch Disney buses, that can be cumbersome because you have to make a connection at a Disney's resort. And service does not start until well after rope drop.