Yes, I would say this is harsh.

Primarily because OP actually did call out accessibility as a concern. That is the opposite of teaching the reader to ignore people who use a11y features. Nor is it OP's responsibility to teach their readers anything they don't care to.

And yeah, where are the tutorials you'd like to see? That could have been a more constructive thing for you to share yourself instead of demanding it from no one in particular.