The academic literature is already there, and various media are already hinting at it, it just hasn't seeped into the mainstream yet. Once the last WWII vets are gone that "politeness" will slip away and politicians not wearing the poppy will be the new standard. I won't be surprised if by 2025 that tradition will be dead and gone. Poppies will morph into the new MAGA caps.

Both Trudeau and Biden made no mention of D-Day on their social media. We're kind of already there.