Well, you have to distinguish between people getting killed by the Scrubkiller™ by hurling themselves into C mash and counters like a wild boar, and legit complaints.
Litchi getting her oki shut down is fine if you don't like it, but it's just part of the matchup. Although, can't you change the timing and directions so it's not just DDDDDDDD to escape it? When I fought LK sometimes he would use it and I would have to at least wait a bit to counter each part of the staff because it was moving around nless it was just on top of me the entire time. I mean, if it's super slow and telegraphed, then what do you expect. That's pretty much the default for what is supposed to get countered.
But it's supposed to balance out with other things; he's harder to fight up close, but easier to zone, etc. It's supposed to be part of fighting him, just like Tager can just backdash your shit and 720 on wakeup if he wanted. Every character has their specialty. Hakumen's specialty is disabling other character's specialties.