I think so. It’s a huge controversy: why has U.S. culture become so polarized? But I think the answer is pretty simple.
When White Christian straight males had all the power (1776-19??), non-white non-Christian non-straight non-males could be safely ignored or marginalized or patronized, but when the tide began to turn, the two sides began to form separate camps, and when people saw that this would result, at some point, in the minority voices eventually becoming a majority, the side with all the power began to panic.
They started to oppose the concept of voting, for example. They began to think of authoritarianism as acceptable. They made conspiracy thinking respectable (at least among themselves). They promoted views that science was not valid.
Which only hardened the opposition to them. I, for example, haven’t had to think very hard about who I agree with and disagree with for quite a while: all I have to do is quickly evaluate which camp favors an idea and which one opposes it to know what I think.
Basically, what happened was that Right understood that, very soon, what having a liberal democracy would mean is that their power to impose their values on the rest of the country by fiat will inevitably disappear. This being utterly unacceptable to them, they ceased all attempts to compromise or form any sort of coalition with their political opponents, which is why we are in the polarized state we’re in right now, and it can only get more so.