Wow, I actually agree heavily with you, even though I rather enjoyed MoS. BvS may have done well, but was still garbage. WW was good, dark, but she was every bit of what I'd expect from a Superman film - ridiculously positive and hopeful, stern, strong, and unabashedly furious in the face of conflict.
Shazam, I hope, is going to flip the whole grim dark shit on its head for DC. Whimsical, ridiculous, fun. And ultimately alters the entirety of how WB handles DC content going forward. We're done with grim. We need some proper Hope in films now.