As someone who is just now learning Rails, I'm loving it. Is this an actual issue that should push me away from the technology? What other technologies are there that streamline the development process as much as rails?
Ignore this idiot and continue on.
Also, I wrote the original piece.
If you prefer a bit of an easier, less-stressful life, there is hope with many of the Perl, Python and PHP frameworks.
The fact that the Rails team quickly responds to vulnerabilities should be reassuring not a disincentive to use the framework. All software is subject to vulnerabilities - the recent issues with YAML are a class of exploit common across many frameworks in different ecosystems (Django's TastyPie had a similar issue in the past).
Remember - Python for Pros, Ruby to pose.