I find Shadowheart way worse than Lizzy.
Though, I think the general statement holds true. This is absolutely not the first time this happens. A big example would be TLoU 1 & 2 with Joel vs Ellie. The sheer amount of Joel apologists that I had to talk with over the internet is immense, but Ellie doing equally shitty things is somehow seen as so much worse. It also shows that people don't even want to bother looking deeper into those characters either. They're just set in their ways & opinions, literally stuck.