Not much to go on.
Some people hate CJ Roberts because he doesn’t rule the way they want - all the time.
And AJ Barrett? She’s made it clear in several of her writings that she’s not a fan of the shadow docket and wants cases more fully briefed. The same same shadow docket that many posters including yours truly decry.
I noticed that here on Free Republic, the only justices who seem to be universally admired are Thomas and Alito. The others are regularly criticized for one reason or another.
I was trying to find a score card or ranking of justices, to see how often they have been able to affirm conservative rulings, amd how often they have gone liberal.