I very much doubt it.
I think it had the potential to seriously damage the RF, but based on the leaked content any revelations that reflect poorly on the RF are being hugely overshadowed by content that reflects poorly on H/M or are simply just excruciatingly cringeworthy.
The thing I note is either how lacking in insight H must be in having read back the early drafts and signed them off or alternatively having signed a deal that resulted in him losing editorial control.
The stories here that will be remembered won't be the narrative H wanted.
It will be the salacious details about losing his virginity and having a frost bitten knob.
Questions won't be asked about William pushing him into a dog bowl, rather admiration for a relative level of restraint against a self absorbed petulant sibling for whom nothing is ever good enough.
Catherine won't be berated for not sharing lip gloss, but for M referring to her "baby brain" and being gracious in response and publicly punished for it.
For reasons only H&M truly know he's sacrificed long term financial security for short term monetary gain.
Exactly what the true cost of that will be, time will tell, but it won't be the RF footing the bill.