Does anyone have any insight in terms of whether an ATS will penalize an applicant for submitting a resume that is more than one to two pages in length?

This standard of adhering to a max length for resumes exists for the sake of a human glancing through a stack. Arguably, this standard is in the process of becoming less relevant. It seems that there will be a point where only a small handful of resumes reaches HR. It makes sense to me that ensuring your resume be a part of this filtered stack is more important than adhering to the whims of the hiring manager not patient enough to look through an individuals' entire work and project history.

What do you all think? I feel that this is a question that should be occasionally assessed. If you disagree with this assertion, do you feel that this shift of appropriate resume length will ever occur?