You're probably right about the economic austerity on the horizon. I think the key is that, especially among young Trump voters, people actually want this to happen. They feel like their backs are against the wall and they have nothing left to lose. We're at the point now where people are genuinely open to the idea of purposefully crashing the economy and bursting this bubble (and make no mistake, we are in a bubble) through deflationary policies, tariffs / trade wars, etc.
There is a growing feeling of resentment and disenfranchisement among young people toward a generation of boomers for whom the stewardship of a prosperous economy (which they were the biggest beneficiaries of) seemed like an afterthought that ought to be considered once they retire and start collecting their social security checks. Big businesses have been taking advantage of illegal labor and legal programs like the H1B visa (which is basically indentured servitude under threat of deportation) to undercut domestic wages while countless young Americans are applying to hundreds of jobs without receiving a single response, let alone an interview. This influx of people also clogs up the housing market and drives up demand while Byzantine development and zoning regulations + huge asset management firms keep the supply of homes artificially low. Not to mention the damage done to the demographics and social trust of a society that imports millions upon millions of foreigners without any plans for assimilation. Social standards of decency and decorum in just the past few years have declined dramatically, which you've probably noticed while interacting with the many foreigners and dullards who now bizarrely seem to occupy the majority of customer-facing roles in businesses across the country. To be fair, COVID probably also played a role in making people socially retarded. I don't think we've ever fully recovered from that.
As for "trans rights" (a ridiculous neologism that didn't exist before 2014) and abortion, they're part and parcel of the neurotic and parochial worldview that dominates modern progressive politics. The science is clear: There are only two sexes (I refuse to use the word "gender," which is a loaded term popularized by freaks like John Money who explored their psychosexual fetishes and pathologies through medical experimentation on vulnerable children). I'm not a bleeding-heart Pro-Lifer but the Pro-Abortion crowd in America seems to view any limitation on abortion as some kind of dire violation of fundamental human rights (as if the baby gestating inside a pregnant woman isn't human?). Even the most progressive countries in Europe have abortion policies that would be considered strict in the US, usually something like a 8 - 14 week cutoff, often with exceptions for rape, incest, and the life of the mother (exceptions account for a tiny fraction of abortions; most are elective).
It's easier and more approachable to discuss these social and moral issues, which is probably why people prefer to talk about them compared to the finer points of other "real policies" (whatever that means, like social issues aren't "real").