Again, not everyone is as hooked into politics as we are. Most aren't. All they think about politics is contempt for Trump, and think Biden's a moron. But better a moron than someone awful. But they'd cheerfully vote DeSantis over Biden.
Look, what people fail to realize is that Biden is considered incredibly safe because he is a moron. That's how he won the primary: he didn't seem to be a radical, he was just dumb. Given the lesser of two evils, people will choose dumb over evil everytime. But give them any other option but Trump, and suddenly it becomes competent non-evil vs dumb, and competent non evil will win.
I don't think that's a fair way to look at it. How many of those candidates were in gimme districts?
His endorsement meant a lot in some places, such as the NH, PA, GA senate races, and the AZ governor. The first three lost, and Kari Lake might lose too. Those are the campaigns that need to be looked at.
Was his analysis good or not though? It's an important question to ask. Yes, Shapiro is biased to hell and back. He might also have a point.