It was interesting to me how many of these were related to making async calls to adjust state resulting in race conditions. In many cases the argument was made that async calls were not justified. Many times we follow a particular call pattern in order to keep things consistent without fully considering whether it's necessary and/or safe.
Also I wasn't aware of the tool named Frida[0] that she kept referencing so I had look that up.
[0] - https://frida.re/