Do you think the US will always still keep rising irregardless due to too many retail investors now being hardcoded into just DCA-ing?

From what I see around me, that seems like the very popular and common mindset these days. I'm not from the US but here in my country people dont seem to care if the US stock market tanks or not. The Dow could fall by 90% for all I know and these people would still convince themselves positively it's a great bargain/discount to buy more. To them, the US market can never falter no more what. No matter what and how economically damaging of anything Trump does. They believe 80 years of proven history of an ever increasing stock market will continue perpetually forever or something.

I think that's also why the market got overheated post Covid crash. This was also the time during lockdown tons of people became invested into stocks. So the market became flushed with cash from the retail investors blindly DCA-ing nonstop. So no matter what, these growing number of casual investors will just keep throwing money non-stop at the stock market. The US could crash completely to the ground and these people would still think it's temporary and they'll benefit greatly from it.