Unfortunately, I think the tribalization and politicization is caused by the share-with-followers social media model, not by specific words, so using or not using the word “doomer” will have a negligible effect on the amount of tribalization. You just have to accept that people who insist on using Twitter will have their sanity eroded in this way, and do what you can to compartmentalize the damage and avoid becoming a target.
Unfortunately, I think the tribalization and politicization is caused by the share-with-followers social media model, not by specific words, so using or not using the word “doomer” will have a negligible effect on the amount of tribalization. You just have to accept that people who insist on using Twitter will have their sanity eroded in this way, and do what you can to compartmentalize the damage and avoid becoming a target.