>>32628191N gets in your way and interrupts you occasionally but that's because he's an antagonist, and he doesn't overstay his welcome when he does show up. He also actually battles with Pokémon (with a gimmick of completely changing his teams each time because he doesn't like humans capturing them so he just grabs whatever's near him for a battle).
Lillie stops you constantly but it's somehow supposed to be endearing just because she's an anime girl? She overstays her welcome to anyone that doesn't love her presence just for her being an anime girl but never contributes anything to the plot in most of them, just standing around being a moe anime girl saying things like "o-oh wow I can't do the thing I need you to help me" all the time.
Lillie is never proactive to the plot and just tags along, with you acting as her bodyguard as she just stumbles from place to place without purpose. The game, rather than trying to make her an engaging character, just takes actual proactive characters like your main rival and the main villain and makes them related to Lillie. Lillie's entire stake in the plot is "I'm related to the person doing these things!"
Zinnia is a fucking shit character too but at least she actually does things in the Delta Episode. They're aggravating things, but she doesn't waste your time the way Lillie does. And Zinnia fans, the two or three that exist, aren't as insufferable as Lillie fans.