Please reread the article - especially the conclusion. ID claims that naturally occurring complexity must be artificial since it is complex - a circular logic fallacy. SETI is looking for a signal that has a simplicity and efficiency that can not be observed being produced by any natural source. This indicates a possible artificial source. The evidence builds if it can be reproduced or a mechanism could be constructed for reproduction.
You misrepresent ID. It purports that random chance could not have created complexity with order.
SETI is looking for a signal that has a simplicity and efficiency that can not be observed being produced by any natural source.
You mean simplicity and efficiency like that found in our own DNA? When the human genome was mapped, scientists were stunned by the lack of complexity, finding far fewer combinations possible than was believed necessary to create the diversity of human life.