Whether it's true or not, there are some predictable consequences to a mainstream "proof of aliens" scenario:
- for national governments, the choice to accept revealing the existence of aliens now would be an implied endorsement of the current world order. e.g. everything has changed, we need to suspend new changes until we know more. Looks bad for elections.
- it is a reason to dispense with rules and limits on sovereign powers that were created without this key ontological knowledge. Aliens are the ultimate existential emergency, states will do what they want "for humanity." Your privileges are a from a world that no longer exists, etc.
- even if it's a hoax, elevating aliens to official news seizes back lost official narrative control, which twitter had made untenable this weekend.
- Worst case scenario, it would imply a mandate from "above" to do whatever the coordinating body behind this revelation might have planned.
Whether this alien thing is true or not, any mainstream acceptance of an alien visitation can be interpreted a signal for co-ordination around a narrative that would very likely be in service to these objectives, imo.