Clarificatory comments, thumbs up! Code that requires an accompanying multi-chapter essay to understand, thumbs down.
Looks like about 150 words of comments there, not a multi-chapter essay.
That aside, I don't know what this code is doing, but working on sundry avionics software I would find that approximate amount of commentary very helpful in some situations. I would be remiss to downplay the value of this commentary without reading the actual words.
First, incorrect documentation is harmful. So much so that in many circumstances I'd rather have no documentation than incorrect documentation. If all of your code has such a high comment-to-logic ratio you're either writing some really subtle (perhaps math-heavy) stuff, or you're introducing a bunch of potential for documentation issues.
Second, readability counts. If you feel like your code isn't understandable without a large number of comments, you've probably not written it to be readable. Sometimes this is very difficult to do (yes, I'm looking at you hot-path C++ code!) but I think that past a certain point effort can be better spent making the code easier to understand than on verbose documentation.
Yes tests. But people can 'fix' tests at the same time too.