Was Biden's unusually broad pardon of Hunter really about Ukraine/Burisma crony dealing?

We've been following this story since Biden Jr. joined Burisma's board

I grew up Catholic. I even used to go to Confession. One time when I was a little boy I was forced to go to Confession and I was at a loss as I had done plenty of bad things, but didn’t want to cop to them all. So I asked the old, kind, priest if I could just get a general absolution. He said sure. I walked out of Confession feeling pretty good.

But I’ll…