You're calling it delusional without evidence: the article you linked doesn't talk about age. Here's one statistical support for my argument.
This Pew Research paper identifies four main right leaning groups. These two are large segments of the Republican base, and overwhelmingly white, male, and aging.
https://www.pewresearch.org/politics/2021/11/09/faith-and-flag-conservatives/
"Faith and Flag Conservatives are the oldest typology group. Two-thirds are ages 50 and older, including a third who are at least 65, while just 8% are under the age of 30."
https://www.pewresearch.org/politics/2021/11/09/committed-conservatives/
"About eight-in-ten Committed Conservatives (82%) are White and one-in-ten are Hispanic; far smaller shares are Asian (3%) or Black (1%). Nearly six-in-ten (58%) are men and most (56%) are ages 50 and older, including 31% who are at least 65 years old."
The final group -- the paper calls it the Ambivalent Right -- is more centrist conservative.
"Half of Ambivalent Right say that the Republican Party represents them either very (4%) or somewhat (46%) well, while a quarter say that the Democratic Party represents them well. "