You are right about Berlioz, haha, the fourth and fifth movements are interesting :D
The fourth is thought to be written while he had a trip taking opium, oh and the fifth when the Dies Irae motif appears is epic. So, an object of your nightmares is well said :D
Yeah, we should not let the negative critique discourage us, but it is not that easy, right? I mean, it's a constant fight, not to forget that and if we can learn from it, take it as a lesson. If it is not meant as a constructive critique, let it go (but again, not always easy)
Rachmaninoff - the same adoration for the second piano concerto 🙌