Oklahoma City worked actually worked as a deterrence for federal overreach. McVeigh is a martyr, not in the religious sense, but the patriotic sense.
TLDR: OK city bombing led the Feds to limit law enforcement excesses, Bush's reforms of the intelligence agencies after 9/11 removed that check, now they are turning War on Terror tactics against enemies of the Biden regime.
I was listening to a podcast yesterday, Jimmy Akin's Mysterious World, about 9/11 conspiracies. He made an orthogonal point when at the very end of the 2nd hour long episode he was discussing the "Bush knew about it and let it happen" theories.
You see, much was made in the aftermath of the OK city attack, and in 9/11 commission report, about the "wall between intelligence agencies and law enforcement agencies". Egypt, Israel, and others had informed American intelligence about the hijackers. This wasn't passed on to law enforcement agencies, who had their own limited information about the hijackers. They weren't able to "connect the dots" as the saying went at the time. Lawyers involved also warned against getting the national security intelligence apparatus involved with what was a law enforcement situation. In fact, that's how the Clinton Admin and initially, the Bush admin, handled terrorism, they were all LE investigations which limited their scope. The law to an extent prevented this intel/LE communication. The lawyers were very wary, Jimmy Akin said, of making mistakes like the ones that happened to Randy Weaver and the Branch Davidians ranch (among other situations) by "overzealous law enforcement" all of which lead to the Oklahoma City bombing as a retaliation.
Those of us who were paying attention at the time, may recall, that after the OK city bombing that it was as serious then with the Feds going after the militia movement and 3%ers and such as today with the Feds going after MAGA patriots and 1/6 "insurrectionists". The only difference is the words "white supremacy" thrown into the mix. The Feds were telling cops to pull over cars with NRA stickers as a pretext to search the car, as members were all potential violent extremists. President Clinton attacked Rush Limbaugh and said he provoked the OK city bombing, something he later retracted. "Jack booted Nazi thug" was a common epithet against Feds, who, of course, infiltrated the militia movement then like they did the Civil Rights movement with COINTELPRO and pretty much destroyed the 90/00s incarnation of it the militia movement.
So after 9/11, this "wall of separation" between the intelligence agencies and law enforcement was removed and they jointly went after the terrorists during the "war on terror". The intelligence agencies grew under Obama to be a real "deep state" and by the Biden regime, you see that the same methods of the war on terror, without the deterrence from the OK city bombing, turned against the supposed threat of "white supremacy". Tucker Carlson makes this point, that the "war on terror" is now being directed at American patriots and not jihadists.
TLDR: OK city bombing led the Feds to limit law enforcement excesses, Bush's reforms of the intelligence agencies after 9/11 removed that check, now they are turning War on Terror tactics against enemies of the Biden regime.