You make a stupid mistake and people politely ask you to fix it. If you dismiss the polite people it's only a matter of time before you run into someone who is not polite.
It also doesn't help if your attitude is that if you think everyone else is being an idiot you don't stop and check if maybe the problem is with yourself.
What stupid mistake? It was an NPM bug.
Yes, but the package on npm is, indeed, corrupt and the latest semantic version.
Anyone creating a fresh project right now with uglifyjs somewhere down the build chain will face this issue.
The only way to resolve this is by publishing a fresh, correct version to npm ragardless of what caused the issue.
The authors have failed to do this till now and the issue remains closed.
Both sides had legitimate grievances, and both sides did a poor job of trying to resolve them.