Ffs, just admit the "common wisdom" is wrong.

Google Scholar: "Do people get more conservative as they get older?

First result, from University of Chicago

...Consistent with previous research but contrary to folk wisdom, our results indicate that political attitudes are remarkably stable over the long term. In contrast to previous research, however, we also find support for folk wisdom: on those occasions when political attitudes do shift across the life span, liberals are more likely to become conservatives than conservatives are to become liberals, suggesting that folk wisdom has some empirical basis even as it overstates the degree of change.