It's not exclusive to Diamond and Pearl, sure, but it still applies. Almost every Pokemon game post Gen 3 has given the player a legendary to baby mode their way through Victory Road and the Pokemon League. Even if you can beat her team easily, you have to admit it's a safe strategy to just save your legendary for her Garchomp and then one shot him (if you can outspeed him of course).
There is so much less shame in saying "I'm attracted to Gardevoir" than playing this bizarre pretend game where you fantasize about it constantly and construct scenarios where you want to fuck it but have to restrain yourself to look better.
We'd still make fun of her even if she stopped denying it, but, there wouldn't be any dishonesty anymore. That's why people have a bug up their ass about this comic, she just keeps lying.
A lot of things about Liliana would be so much less frustrating if she was actually honest about it.
"Yes, I'm attracted to Gardevoirs" instead of "let me write about me having the most especialush relationship with the most better Gardevoir ever, who loves and adores my every move and I forgive everything, even pederasty, but no, there is no romantic relationship here".
"Yes, I lied about a lot of things regarding my ex because I was hurt that she ignored me and then dumped me" instead of "she raped me two times, no, wait, four times, no, six times and all those times she laughed at my face for it! it was totes traumatic and I have been raped before so it was the worst."
"Yes, I cut Cypher off because she argued me about headcanons not being canon" instead of "she is a creepy pedo racist that I'm glad to cut off before her toxicity could hurt me any longer."
"Yes, I don't go to therapy because it's such a hassle, too much work and don't really want to work on myself" instead of "my therapist agrees with everything I say and do, she constantly reaffirms that I'm always the most victimized by everyone."
But it'll never happen because Liliana's obssesed with controlling the narrative on a very specific way where she's the most caring, the most loving and woe is her, isn't just so sad that bad things keep happening to her and nobody ever loves her enough, that she only gives and gives but never recieves enough love? Poor little Native woman, constantly facing the reality of all her ex-friends being racists, don't you feel sorry for her.