Regardless of the veracity of your allegations, this paper is a sound empirical analysis. It's a solid piece of research, and it's not surprising that folks from a competing blockchain would be the first to unveil real problems with Monero.
It is not. The problems were previously identified and documented by Monero developers, and the paper acknowledges this.
The paper attaches specific historical numbers to those problems, which is good, though one can still quibble about how the numbers are aggregated and presented.