Hello,
I’m sorry this happened to you. I have a friend who thinks he was banned from CrossSave as well as the same thing you described happened to him. He unfortunately never appealed and stopped playing because of it.
I have played with your son DiscipleOfTheWitness before and he tells me you guys are normally just casual players. Most people that I have seen cheat are doing so in trials to get the upper hand, not exploring the dreaming city.
You guys seem like good people so I hope bungie finds this and unbans you. From what I have read, you did nothing to deserve it.
Thank you. It's nice to find some support and kind words. Anyone can see from my gameplay there's been nothing weird:
https://destinytracker.com/destiny-2/profile/bungie/4611686018511970053/overview