If these points were indeed important, I'd expect feedback addressing them. All feedback I received was about doing well or not well on certain questions. No meta whatsoever.
I didn't make it for good reasons, but I feel there is a big chance part. I had one onsite interviewer in the first round who was difficult to deal with. He presented a problem I've never seen in my life, nothing close. He interrupted and gave hints in directions that didn't make sense to me, and didn't give me 5 minutes to think without him talking. The second attempt was fair. In the third, the first phone screen's interviewer was constantly typing on his keyboard while I talked, and it was so loud. No real conversation happening. He was just staring in his screen clacking away. I addressed it, but he kept typing loudly while I was talking. So annoying.
On the other hand, the recruiters were always very good.
At another company recruiting was a mess, and only knowing someone inside helped dealing with that, but the interviews were all great.