Persy Bridgman,American physicist,winner 1946 Nobel Prize in Physics in his book "Dimensional Analysis". was very sceptic and critical about Planck units.
I have additional arguments to protect Bridgman's point of view
Does all Planck units are sacred or only one?
We doesn’t have guarantee G, c, are real constants or not, during the evolution of the Univertse.
We doesn’t have guarantee they depend of each other or not,or 2 sides the same coin.
Imagine that G and c simultaneously vary….because permitivity of vacuum vary following the evolution.
But we believe:
1.Schwarshild black hole R radius

2.Planck unit L of length

3.Planck unit T of time

4.Planck unit M of mass c/G
What is correspond to real world?
If all,it would be absurd.
To my opinion only #4 linear link between G and c is real….and eternal.
And #1,2,3 are fake that only teasing physicists
Just in case:
Max Planck, Scheinprobleme der Wissenschaft (Illusory problems of Science)
http://www.quantum-c...HEINPROBLEM.pdfEven more interesting, he warned about similar situations.