Isn't her rulings on sex offender cases particularly, but rather her being selected in much the same way as Barack Obama was. That is, on the basis of political orientation and skin color.
Obama had virtually no experience in politics outside of being elected. His previous office experience consisted of one term in the Senate doing nothing, and several in the Illinois senate doing nothing. He had no real work history having been an obscure "community organizer" whose project participation could be characterized as a failure. His stint as a lecturer at the University of Chicago could likewise be characterized as disinterested mediocrity.
Jackson is much the same. She has the correct political and ethnic composition to appeal to those wanting her appointed. Outside of that, her experience on the bench is rather thin. On the few cases where she's ruled on issues that could be considered commensurate with Supreme Court cases, she has a solid track record of being overturned. This is a good indication that she has a poor legal mind for making considered and sound judgements in rulings and resorts instead to political expediency.
That's the problem with Jackson becoming a Justice. She would be a politician first, and a jurist second. The Left would love that, while the rest-of-us would, and should be appalled.
Obama was educated in the law. He was a political organizer and was an Illinois state senator and a Senator. That is all relevant to politics. Now, Trump, that is a guy who was miles out of his field. He had no political knowledge. No legal training or education. You are as usual dead wrong.