Is the US to blame? No.
Blaming the US is the same logic that blames women for being raped because they went outside without wearing a burka.
However some of what this article states is just hogwash. "Third, NATO enlargement never posed a military threat to Russia". The US has placed nuclear weapons in Europe to allow a quicker aniliation of the "enemy" [1]. How can this not be interpreted as a threat? This would be like Russia having nukes stored in Cuba. I highly doubt the US would not see that as a theat to their national security.
[1] https://www.washingtonpost.com/world/2019/07/16/location-us-...