“The posted.”
Can you convey this in English?
“Idea of that”
Can you convey that in English?
“is clearly an airliner contrail”
Why?
“The posted video” - the source video WAS POSTED on Twitter, which is where everyone first saw it.
That English enough for you?
As for it being a contrail, as an airline pilot I’ve seen tens of thousands of them and I know how they look when upper level winds and temperatures vary.
Just look at it. It’s obviously a contrail.