I would think this is as baseless rumor in that Click to Move is a gaming staple. They are likely wholly ignorant of IWT.

I would like to hear from the developers (or product managers) what IWT was created for, like who justified the expense? Is it a development / testing 'pathing' tool that is used for testing and people thought it might be cute for accessibility?

I am sure the waypoint system still exists for development / testing, memories of being able to ride from Kargath flight path to Lothos with a single button was such an achievement. But that should have never been in the game.