No, I’m not missing your points... Your points are just irrelevant.
For example in
Season 7, Episode 2... HotPie TELLS Arya about how Jon united the Wildlings with several Northern Houses to defeat Ramsey Bolton at the ‘Battle of the Bastards’... even though HotPie himself was NOT there, because he was all the way down South (still working as a cook at the Inn of the Crossroads) near King’s Landing.
Word. Of. Mouth. Gets. Around... is the ‘main point’ you keep ignoring.
Before Arya arrives at the Crossroads... did you need to ‘SEE’ anyone pull HotPie aside & literally ‘TELL HIM’ that Jon was King in the North???

No. I bet you did not.
But now all of a sudden.... you think it’s ‘bad writing’ when ‘word of mouth’ reaches Arya (off camera) about Jon being stabbed in the heart, huh.
Wake up.
Join the rest of us who don’t need every last single detail ‘spoonfed’ to them after 7 whole seasons.
And btw, the writers did NOT deny you the scene of Dany ‘finding out’ that Jon was LITERALLY stabbed in the heart & actually died, just like Davos claimed. She saw it firsthand & realized it was all true.
Which means you probably just were not ‘paying attention’ when it happened....
Look at all the people in the room helping Jon undress. Yes, those folks TOLD other people in the North about ‘what they saw’.
They send ravens. They write letters to their families. Nobody is ‘keeping that shit to themselves’.

Because that type of ‘miraculous shit’ doesn’t happen everyday.
Look at all the Wildlings and other folks at Castle Black when Jon came back from the dead. Yes, those folks who never stayed at Castle Black TOLD other people in the North about ‘what they saw’.
They send ravens. They write letters to their families. They tell ‘total strangers’ on the roads. They tell stories around campfires. Or they tell anyone else who would stop to listen. Nobody is ‘keeping that shit to themselves’.

Because that type of ‘miraculous shit’ doesn’t happen everyday.
Word of Mouth gets around.