Yes, it was an extremely aggressive and short sighted thing for him to do. Most people don't know this story though, so it seems the Democratic Party gets a pass.
Here's McConnell lambasting Reid about it in 2013.
https://www.c-span.org/video/?316395-12/minority-leader-mcco...
>It appears to have led to an era of unprecedented judicial activism.
Judicial activism is a judicial philosophy holding that the courts can and should go beyond the applicable law to consider broader societal implications of its decisions.
https://en.wikipedia.org/wiki/Judicial_activism
Based on recent decisions, we seem to be currently in an era of judicial restraint, not activism. Again, the SCOTUS doesn't create laws, congress does. That's the way the system was designed. I hope the Citizens United decision will get overturned.