It is good that you didn't take it personally, seeing as the initial responses wouldn't know anything about your capabilities, and so when they see a story described as "going to be a huge story", it makes sense to caution the writer about the risks of biting off more than they can chew.
Now, could they have worded it better so it didn't come across as 'negative'? Perhaps, but the thing to note is that 'too big a scope' is a very common problem, and one found among more than just "stupid little kids".
In the future, a potential way to avoid people making assumptions could be offering more detail in the initial post. Being broad in the Writing Workshop will invite more general responses/advice, and being aware of a story's scope is very much general (and common) advice. I think people went into more detail than they usually do about it, which I thought was actually nice to see.
Anyway, if you make it clear that you are aware of what 'huge' entails, I imagine that while people might have still mentioned it, it would have been worded a bit differently. Regardless, looking forward to your huge story, I wonder if it'll beat out Dead Man Walking (Zombie Survival) (if you hover over the length number, it'll tell you how many words it is).
As for Kurio, you'll notice that they only came in after your response of calling people negative, where you diminished writing to a very simple "type words to describe what happens". Is calling people stupid or trying to make them mad good? Perhaps not, but 'brutal honesty' is very much a part of the site atmosphere, and so Kurio's strong response to your statement isn't inherently bad, as it is likely 'honest' at the very least. Sure, it might not be very productive, as it is unlikely to make you change your mind (unless it leads to some introspection or something, but that won't happen if you don't take it personally), but again, the underlying emotion is honest.
Lurking a little to see how people interact in different threads might help with getting a better feel for the site atmosphere. I find it is rather unique compared to a good deal of other sites, and so I can understand it not being to some people's tastes, but I do believe there is value to be had in it. Obviously though, you don't want it affecting you in some highly negative way, but a part of that will come down to how you take what people say. Even cruelly worded stuff can contain value, such as: learn to spell idiot. Assuming there is something wrong with the spelling, aiming to work on it is the value, the idiot less so for some people. Context does matter though.
Anyway, the tone in your response also wasn't very diplomatic, which definitely wouldn't have encouraged Kurio to take on a nicer tone. If anything, the strong tone would have potentially aimed to show you that the initial responses were actually pretty nice (comparatively at least).
The thread is unlikely to be deleted, as useful posts have been made which can help people. Again, scope is important. Those posts might not help you, which obviously sucks as you made the thread, but keeping in mind that anyone can read the thread should help in understanding why it can be worth keeping around.
If you look at the top right of the first post, there should be an unwatch button, you can use it to not get notifications for when people post in this thread. Alternatively, you can just not respond to people who do. Both ways will stop you from needing to argue with people, do whatever works for you.
Regardless of all that, hopefully you keep writing. Ambitious stories are at more chance of failure, but they can, and do, succeed, and when they do, it is always amazing.
I wish you success with your writing endeavors! And remember what they say, actions speak louder than words!
