If it's any consolation, research shows that you're right about the poor usability of flat design: https://www.nngroup.com/articles/flat-ui-less-attention-cause

If it's any consolation, research shows that you're right about the poor usability of flat design: https://www.nngroup.com/articles/flat-ui-less-attention-cause-uncertainty/ https://www.nngroup.com/articles/flat-ui-less-attention-caus...