Everyone on the site who has 15 reputation or more can participate in community moderation to some degree or another. There are people within that community who use the community moderation tools of voting frequently in an effort to have the site match their vision of what it should be... but they aren't mods.
When dealing with thousands of questions per day (90% of which are crap https://en.wikipedia.org/wiki/Sturgeon%27s_law ), the amount of time they have to work with any one post is very limited. Often people are terse in their comments - it takes time to sit down and write a thought out reply... and that is very limited in comments if it isn't an answer itself (and to that point, that is by design).
This terseness of communication is often interpreted as rude. Its not intended to be - its just the medium and limitations. Yes, sometimes people are rude. The thing to do in these cases is flag the comment as rude - if there is a pattern with the behavior, the moderators (with a diamond) handle the flag and will take it up with the user who is rude. Saying that your code does not work as described in the question, however, isn't rude.
I applaud your use of google first. There are so many people who fail to realize that the goal of Stack Overflow is exactly for people like you - who search with google and find an answer and never need to ask a question on the site themselves.
The significant amount of incorrect cruft laying around is a side effect of people not using the moderation tools (downvotes on questions can make the questions get deleted and make search results better) or a value proposition that has entered the collective community moderation of "anything that attempts to answer the question has value and shouldn't be deleted." Unfortunately, that later point reduces the value proposition of the site and diminishes its utility.
Everyone on the site who has 15 reputation or more can participate in community moderation to some degree or another. There are people within that community who use the community moderation tools of voting frequently in an effort to have the site match their vision of what it should be... but they aren't mods.
When dealing with thousands of questions per day (90% of which are crap https://en.wikipedia.org/wiki/Sturgeon%27s_law ), the amount of time they have to work with any one post is very limited. Often people are terse in their comments - it takes time to sit down and write a thought out reply... and that is very limited in comments if it isn't an answer itself (and to that point, that is by design).
This terseness of communication is often interpreted as rude. Its not intended to be - its just the medium and limitations. Yes, sometimes people are rude. The thing to do in these cases is flag the comment as rude - if there is a pattern with the behavior, the moderators (with a diamond) handle the flag and will take it up with the user who is rude. Saying that your code does not work as described in the question, however, isn't rude.
I applaud your use of google first. There are so many people who fail to realize that the goal of Stack Overflow is exactly for people like you - who search with google and find an answer and never need to ask a question on the site themselves.
The significant amount of incorrect cruft laying around is a side effect of people not using the moderation tools (downvotes on questions can make the questions get deleted and make search results better) or a value proposition that has entered the collective community moderation of "anything that attempts to answer the question has value and shouldn't be deleted." Unfortunately, that later point reduces the value proposition of the site and diminishes its utility.