As I understand, the meaning of this phrase is: we're leaving or we're going away. And yet, some questions remain.
Apparently, on s'en va is a generalization of: on se va de object, where en is a pronoun of an object.
1) What is that object precisely?
Is it the current place, the source of the movement or it's more a situation from where we're going away?
And there is another way to express a similar thing: on'y va which is a generalization of: on va à object.
Here, à object means a destination object, and y is a pronoun for that object (place).
Do natives reckon these two - just the same, i.e. on s'en va and on'y va?
(I personally think they're different as on'y va suggests that we're moving to some known location.)
2) Why se aller is used here?
And is it the only case when aller is used as a reflexive verb?
3) What do you think on saying: on va?
Is it a replacement of the two?
enis useless here and doesn't refer to anything, andsemakesallerreflexive, which is also a non-standard thing (a relic). – Onkeltem Jan 09 '22 at 22:40