The reason is that the people who attack them people, aren't good modders themselfs most of the time.
One of the many common things I see are "Not possible", however, I can find a way a lot of the time..
Even in a server, I said I had MADE a mod with disks, and someone in the server said "Yeah thats not possible, you wont be able to make that." Then I replied "I have it made, do you want to come to my server?"