Why does complexity sell better?
Complexity signals effort. Papers with difficult ideas and technical details suggest blood, sweat, and tears. Systems with more components and features hint at more effort than systems with less. Because complex artifacts are viewed as requiring more effort, they’re also deemed as more challenging to create and thus more worthy. And because of the perceived effort involved, they’re often judged to be higher quality.
Complexity signals mastery. A complex system with many moving parts suggests that the designer has proficiency over each part and the ability to integrate them. Inaccessible papers peppered with jargon and proofs demonstrate expertise on the subject. (This is also why we quiz interview candidates on algorithms and data structures that are rarely used at work.) If laymen have a hard time understanding the complex idea or system, its creator must be an expert, right?
Complexity signals innovation. Papers that invent entirely new model architectures are recognized as more novel relative to papers that adapt existing networks. Systems with components built from scratch are considered more inventive than systems that reuse existing parts. Work that just builds on or reuses existing work isn’t that innovative.