2 another justification
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Does Jon really abandon the Night's Watch, or is he still keeping his wowsvows?

In the beginning of ASOIAF, the duty of the Night's Watch consisted of manning the Wall to protect Westeros against the wildlings. Later on, it shifted to protecting the humanity against the Night King and his armies. Now, the Night King is defeated and the wildlings are no longer enemies. Therefore, assisting them in reclaiming the lands behind the Wall amounts to strengthening the Northern border against any unknown enemy and is entirely within the duties of the Watch.

One more thing in favour of Jon staying a part of the Watch: the lords of now Six Kingdoms were happy to see Jon take the black once more because the vows include the oath to father no children. The last thing they need is the new generation of Targarien pretenders. He'd better not break this one, or they will come after him with a vengeance. Bronn's happily retired from the hitman career, but as the Master of Coin he'll hire a few Faceless Men even if it delays the vital task of rebuilding the brothels.

Does Jon really abandon the Night's Watch, or is he still keeping his wows?

In the beginning of ASOIAF, the duty of the Night's Watch consisted of manning the Wall to protect Westeros against the wildlings. Later on, it shifted to protecting the humanity against the Night King and his armies. Now, the Night King is defeated and the wildlings are no longer enemies. Therefore, assisting them in reclaiming the lands behind the Wall amounts to strengthening the Northern border against any unknown enemy and is entirely within the duties of the Watch.

Does Jon really abandon the Night's Watch, or is he still keeping his vows?

In the beginning of ASOIAF, the duty of the Night's Watch consisted of manning the Wall to protect Westeros against the wildlings. Later on, it shifted to protecting the humanity against the Night King and his armies. Now, the Night King is defeated and the wildlings are no longer enemies. Therefore, assisting them in reclaiming the lands behind the Wall amounts to strengthening the Northern border against any unknown enemy and is entirely within the duties of the Watch.

One more thing in favour of Jon staying a part of the Watch: the lords of now Six Kingdoms were happy to see Jon take the black once more because the vows include the oath to father no children. The last thing they need is the new generation of Targarien pretenders. He'd better not break this one, or they will come after him with a vengeance. Bronn's happily retired from the hitman career, but as the Master of Coin he'll hire a few Faceless Men even if it delays the vital task of rebuilding the brothels.

1
source | link

Does Jon really abandon the Night's Watch, or is he still keeping his wows?

In the beginning of ASOIAF, the duty of the Night's Watch consisted of manning the Wall to protect Westeros against the wildlings. Later on, it shifted to protecting the humanity against the Night King and his armies. Now, the Night King is defeated and the wildlings are no longer enemies. Therefore, assisting them in reclaiming the lands behind the Wall amounts to strengthening the Northern border against any unknown enemy and is entirely within the duties of the Watch.