OP did not literally say "Everything is political", they said "There are no apolitical institutions". Which is functionally the same thing. "Everything is political" is a common phrase used to express a common school of thought, [1] for example. I was interacting with this school of thought directly in my comment.
I agree with you that "Everything is political" is not true. But tpm is arguing the opposite.
"Everything is political" is a trivially true statement when using tpm's definition of "political", which is the point I was trying to get across. tpm is claiming that any institution which interacts with the government in any way is political in nature. This means that even the rocks and trees and oceans are political, because they are at the mercy of government policy.
I am arguing against this definition of "political".
[1] https://daily.jstor.org/paul-krugman-everything-is-political...