And this shouldn't have come as a surprise, any number of parts of the Constitution have been ignored when convenient. People might nowdays say that, for example, internment of Japanese Americans was against the Constitution, but a touch of the barn door there.
You defend the Constitution or you don't.
The worst of all worlds is to be like the Democratic Party are currently. Make a massive load of noise about following the rules. Then some guy comes in and tears all the rules up, and all they have is to say "He's a meanie, and we are going to state our stern disapproval".
So, I guess Biden thought it would be doing the right thing to not interfere in the work of the DoJ in that lovely, gentleman's agreement notion of governance. Biden is - allegedly - annoyed that his AG dragged the legal stuff out so long that Trump couldn't be brought to court in time. Maybe Biden should have actually said to the AG "Get a fucking move on, pal: the clock's ticking and this needs to be wrapped up well before the 2024 election" Instead Biden delivered the worst of both worlds, neither defending the rules nor even delivering a win for his side. In other words, he was just a failure.