I am not afraid of doing an exit interview and putting everything on display, specially if leadership is toxic. It's important for HR to understand problems within the company so that they can be addressed.
I have done this with no issues arising from it even though I have referenced that same employer in my resume.
Potentially toxic middle management on the other hand...
I've actually carefully avoided saying stuff that was substantially true about managers precisely because I knew that (i) it'd match what other leavers had said and (ii) I'd been there a lot longer, and knew the real issues were structural, but if the company decided there was an issue with staff turnover it wasn't the big picture stuff they'd go for.
