Ending Post-Modernism For Good

Post Modernism, the idea of "A worldview characterized by the belief that truth doesn't exist in any objective sense," according to Josh McDowell, is an absurd philosophy.
Firstly, there are many bad ideas in the world. However, some of the really bad ideas, the truly absurd ones, don't require counter-arguments. Instead, these bad beliefs are often
self-contradictions. Here's a conversation I had with a post-modernist online about 5 minutes in:

Them: ... And so, there is no objective truth in the world.
Me: How foundation is that to post-modernism?
Them: It is the bedrock of post-modernism.
Me: So you're saying there's no objective truth?
Them: Correct.
Me: But aren't you making an objective truth statement?
Them: Excuse me?
Me: Isn't you saying "there's no objective truth" a statement making objective truth? You are saying it's objectively true that nothing is objectively true?
Them: That's a ridicuoulous argument.
Me: Calling something ridicoulous is not a rebuttal.

To conclude, much like saying all generalities are false is a self-contradiction (you're making a generality about generalities,) post modernism, too, is a self-contradiction.
Post Modernist are saying it's objectively true that nothing is objectively true. It doesn't make any sense

Thanks for reading.