No, I simply disagree with the math and find that number implausible. I believe that most masternodes will ultimately be compromised, either directly or via VPS or other back doors.
When you deal with entire eco-systems, then you simply have to try your best at the area of your expertise.
Our own PCs might be compromised. HDD firmware, processors, network equipment firmware, software backdoors, RNG fixing, etc etc. And then the entire Internet might be controlled, thus someone like NSA can see the whole network flow in a "transparent" way. If we take such hypotheses as somewhat probable, then no coin will ever be private or anonymous. We (all people involved in anon projects) might as well throw the towel and go home.
You're incorrect. Even full (as in 100%) network flow for example, does not deanonomize Monero transactions. It does identify Monero users (which is why we are adding i2p to obscure it) but not the flow of coins.
As long as there is some piece of hardware, under your own control that you can use to sign transactions properly, the rest need not be trusted. That's a much lower and more plausible expectation of trust than some nodes operating mostly in VPS hosting centers.