Indeed. There are dozens of other moments through the past ten years of Trumpism that the supposed guardrails were to prevent and did not, and in the wake of each one the custodians of those guardrails shrugged and went "oh well... I guess that's Trump."
Emoluments, tax returns, the porn star, lying under oath, J6, "fake news", losers and suckers, bone spurs, snubbing Carter, crowd size bullshit, grab em by the pussy, obvious nepotism, lock her up, separating families at the border, "very fine people on both sides", "stand back and stand by", sparring with Fauci, now jailing judges, deporting people off street corners, letting Musk gut government agencies, etc etc.
And that's just off the top of my head; I'm such others have catalogued many, many more of these that I'm forgetting, but yeah... good luck to anyone who can look at a list of these things and be like "ah yes but that was all in the comfortable past, surely the guardrails that failed on every one of those previous instances will somehow hold now. Hooray!"