Biden pardoned those family members because he knew Trump would personally go after them and make an example of them regardless of what they actually did. It shouldn't have happened, but it's pretty clear why it did.

Also, how on Earth are their "crimes" as egregious as those that Trump has pardoned in his recent term? Seriously, what did they do? How many people did they hurt? You can't just say "corruption" in an ambiguous sense, because then millions of other people would also apply. Also, "I don't know but it's fishy!" doesn't work when we know literally everything in Hunter Biden's life. That was the whole controversy.

The Binance founder directly impacted people in a significant way. The rioters were violent protesters that resulted in loss of life and others fearing for their life. It isn't the pardon itself that is bad, or the number, but the message it sends as to why they would do it. Biden was "if you're in the family of the president, you'll get forgiveness for your poor life decisions". Duh, like it or not, that's always been true, and Biden got roasted for it anyway. He's done, his family is out.

Trump is "if you're rich or you worship me, literal crime is legal".