Well sure you can Flash any Canadian Carrier's Firmware - But there isn't any May Firmware from ANY other Canadian Carrier to Flash RN. As for the bloat - Samsung / Carriers get paid to include it - So good luck with getting them to stop... But it is...
You might want to look at actual science - instead of falling victim to conspiracy theories...https://sciencebasedmedicine.org/?s=5g&category_name=&submit=Search