I feel like this is some sort of implication against CL.
She finally opens up about how the company treated them during disbandment and all of a sudden, we are hearing about unruly behaviour and a letter that we've never heard of before?
YGE has always tried to shift the blame to the girls. First it was Minzy's fault for not re-signing for basement duty, then it was Bom's fault, now it is CL's fault.
The company and YG will never accept responsibility for the fact that they mismanaged and shelved the girls during their prime because YG got bored with them and moved onto his newer, prettier group (and that's not Blackpink shade because they have been mismanaged by him too)
The timing seems clearly to undermine CL and her complaints to me although I don't trust a word YGE says.