Thank you for engaging with the issue (unlike clvf88 who just went for the unflattering ad hominem). You're right of course that aviation is one of many polluting industries. Two of your points stick out to me:
1) one single industry (aviation) counts for 2% of emissions. That's astonishing for a single industry
2) whereas other modes of transport can probably reduce emissions, it's not realistic that aviation will in any reasonable time
If the climate were in a moderately worrying position I think we could accept aviation's contribution and tackle the rest. However, the broad scientific consensus now seems to be that we just cannot be picky about the industries who do and don't contribute.
So I stand by my point: sadly, very sadly, aviation cannot return to business as usual. And that is very apposite to this discussion.