I think they learned their lesson with Niobe Labs. So we got Invasions while the raid race was going on.

Well yeah they did release at the same time ,However I don’t think Bungie could’ve predicted how long it would’ve taken for Worlds first to end so I assume they were like “Let’s release it now instead of reset so those who can’t raid have something to do” Plus vendors have been saying Vex have been pouring out of the garden since the Mind was destroyed