Well see. It will probably die down soon if theres no follow up, and there usually isnt, not from the mainstream anyways. Even this admission would have remained in the dark, if Greenewald and others didnt do some pushing. Besides as long as its unknown, people can and will think its anything really, since unknown doesnt say much. They will fill those holes with their own truths. It could be aliens to some, it could be secret military craft to others or it could be hallucinations/misinterpretations to debunkers, depends whos looking at it. Thats how it always goes until theres something undeniable that removes all doubt.
IF there is some otherwordly presence here that wishes contact at some point, then id say yes, disclosure is inevitable at some point, unless we destroy ourselves first. It is as inevitable as growing to an adult. At the latest, it would happend when these others would reveal themselves to us in mass, no one could really deny that kind of a show. I sometimes think thats the only way this would happen, people and governments only seem to muddy the waters and argue around forever whose version of truth is more valid, like i mentioned before. And even after that theres probably gonna be some fringe groups who twist or deny the whole thing still, like religious fundamentalists or flat earthers. Never underestimate the power of denial. They dont matter tough in the big picture, the world can move on without them.
However we dont know what the offworlders timetable and requisitions would be for it, it could take the next 10 years or 1000 years. Maybe theyd want to check if we survive the hurdles that are coming, prove our worth so to speak. Just speculating here, but sapient species that is contact ready is probably preferred to show both intellectual, emotional and spiritual maturity to understand their responsibility in natures chain and protecting their planet and peoples, and technological prowess to start exploring the stars or creating AI. In that case wed be way off still.