Primarily, the "design" argument is religious-faith-based construct and simply a new name for creationism. Atheists simply do not accept religious-faith-based arguments to explain the natural world.
Atheists tend to reject the design argument mainly because of our current knowledge of the theory of evolution. The vast majority of natural things which appear designed, such as wings, have been shown to be the process of evolution by natural selection.
There remain some things which appear designed that haven't yet been explained by evolutionary theory, but atheists typically argue that these are minor, and will be explained eventually since there is abundant evidence that supports evolution and it can be reproduced in the laboratory.
Another common line of argument is that the few things we cannot currently explain by evolution may never be explained, and for the time being it is better to say "we do not know" than "this means God did it". Scientific research is an ongoing process.
For an interesting and comprehensive discussion of 'intelligent design aka creationism" see the link provided below for the decision in Kitzmiller vs Dover.
An argument from design is a theological term for a teleological argument - an argument for the existence of God, such that because nature is orderly, it is evidence of a designer.
Nonsense.
The short answer is it isn't; there are clearly millions of atheists. There is a theological thought that if there are all powerful gods, there wouldn't be any atheists, so the fact that there are is an argument against gods' existence.
The design argument, also known as the teleological argument, is an argument for the existence of God based on the idea that the complexity and order in the natural world indicate the existence of a designer. It suggests that the intricate design and purposeful arrangement of the universe point towards an intelligent creator.
Aquinas's design argument is a philosophical argument that asserts the existence of God based on observations of the order and purpose evident in the natural world. According to Aquinas, the complexity and harmony in nature suggest a design by an intelligent creator, which he identifies as God. The argument is also known as the teleological argument, derived from the Greek word "telos," meaning purpose or end.
Reject or disallow by exercising one's superior authority.Reject the decision or argument of (someone).
it seeks to offer an explanation for the design within the universe
The argument by design, also known as the teleological argument, posits that the complexity and order in the universe suggest the presence of an intelligent designer. It argues that the intricate design and purpose in nature imply the existence of a creator or higher power. This argument is often used to support the existence of God or some form of intelligent being behind the universe.
Assuming you mean "Why do religios people jusdge atheists as bad?" then the answer, which does not apply to all, is that they view atheists as immoral beings who purposefully reject their god so they can sin, or something to a similar tone (they don't believe in my god, therefore they are bad.)
The phrase comes from the MTV Show The Challenge: Fresh Meat 2. In episode 3, Jenn and Mandi get in two an argument and Jenn calls her a "Tori Spelling reject".
Visual Rhetoric
As reported in the chapter's "Continuity and Change" section, why did Louis XIV reject Bernini's design for a new façade for the Louvre?