It would be weird if he didn't? He pardoned his entire family, as Trump made it clear he was aiming to harass Biden's entire family for revenge. And the way he's been acting this presidency has only confirmed that's not beneath him.
The decision is a lot more respectable than "this guy gave me a bribe." They are worlds apart. And some may be theoretically willing to roll the dice on that for their family, but it reads naive.