I interviewed there about 4.5 years ago, and I didn't know any of this, and while there were a few red flags, they seemed mostly around their recruiting process and not with the job itself- at least until my onsite where my interview became almost outright combative and hostile at one point- Long story short, they were implying I couldn't handle their complexity, and I was just appalled at the mess they had made of it. I had only minor interest in the particular role, and was hoping to meet people and network around inside the org since HR sounded like it just had absolute tunnel vision and "my" rep was just focused on filling this one specific role, but the process spanned months and by the time my onsite came around I had already committed to another job, but figured I would see the process through. I headed on the flight back with zero interest in working with that team, though I did love the dog friendly culture. I wrote about this in more depth in the past if you are interested I can dig it up.
But in general, while it wasn't regarded as a cushy place (compared to say Google), I never knew it to be a meat grinder until recently. If anything about 3 years ago, I started hearing that working on the business side was problematic, but its much more recent that those stories started coming out from the engineering side of things.