“The massive Boomer retirement and die-off. “
Not according to this chart, which is animated. It shows pre-senior population rising as the years go on.
I think the following URL is the longest I’ve ever seen, but it works for me.
https://tinyurl.com is your friend.
toward the end of that chart the centennial population increases significantly. But otherwise it looks like there is a fairly constant age distribution over the next 30 years.
Was that the point you were trying to make. Or did I misread the chart?
Please ask the moderator to delete your link, and repost it using tinyurl.com. It has destroyed the formatting for the entire page.