This is a beautiful example of why authors should not respond to reviews. Go read, and read as many of the comments as you can cope with.
It's also an example of the perils of self-publishing: we are blind to our own grammatical foibles and spelling errors, and a mechanical grammar or spelling checker won't spot everything. But it's mostly of use as a lesson to aspiring writers on the subject of how not to interact with your readers. And maybe as a new reference point for the Dunning-Kruger effect.
(I've got a personal policy about reviews: I don't respond to them unless one of two conditions apply: there is a citeable error of fact — they spelled my name wrong, or something equally clearly incorrect — or the reviewer directly invited a response to a question. And in the latter case, I try never to comment on, let alone impugn, a reader's reading of my work. Once the words are on the page they're not mine any more, and I have no control over how a given reader will interpret them.)