They have not hired 87k new agents. They approved , in 2021; hiring 87k new employees by 2031.
In 2022, among the IRS’ workforce of 79,000 employees, 10,000 are actually agents. Within that, 8,000 are revenue agents who audit tax filings and 2,000 investigate potential tax crimes.
I am sure future hirings , under Trump; will be severely scrutinized.