Your rewriting of the comment says exactly the same thing it did before. My assessment of it remains the same.
I think an important part of maturing as a developer (and a human) is realizing that it's better to say nothing at all than to write "it works for me, use something else if you don't like it" in response to criticism of work that you:
1. Publish online for public use;
2. Describe as "the best font for programming";
3. Set up a Patreon page to collect money for.
Note that the criticism was not addressed to the designer in the first place. The designer went out of their way to find and dismiss criticism with a non-informative "I guess I just don't care".
The critic explained why they strongly feel that e.g. curisve italics aren't a good feature for a programming font (moreso described as "the best" one). The designer added no context or insight into why they think differently other than "I don't care", which is, frankly, offputing.
It is also disingenuous to sum up the criticism as "does not follow all guidelines for readability". The criticism wasn't about following guidelines; it was about the font being hard to read.
Imagine a teacher telling a student their handwriting isn't legible, and the student responding with "I guess I don't care, following all the guidelines wasn't the goal in producing this work, and I myself can read this perfectly fine". We are not that far from this scenario here.