I think you can still easily reach if you, say, tithe 5 or 10% of your (post-tax even!) income (to a church or other 501-c-3) and have a mortgage and pay property taxes in a major metropolitan area. (Also if you're single the standard deduction is half married filing jointly.) (I didn't realize the personal exemption is gone now too!!)
But a quick google says... according to the IRS in 2022, 139.2 out of 154.3 million tax returns took the standard deduction, which is indeed around 90%. (Looks like up from 87% in 2020 maybe). So, true, defintiely most people, but still 10% not.
It looks like maybe pre recent Trump standard deduction changes (which were phased in), as many as 30% of filers itemized. (Still a minority to be sure).
I wonder if charities have seen a big hit in donations, if the itemized deductions people are no longer taking were an incentive.