You access the work platform by climbing up the tower PAST the work platform, move around to the other side of the tower, and then climb down a rung or two onto the work platform (don’t try to climb through the end guardrail or over the winch). The Access Landing is used in places where there is not enough “stick” above you to climb past the platform, or where there is physically not enough room, like inside a gym.
Climbing the tower is both safe and legal. Always maintain three-point contact. If questions arise about this practice, please go here.