You aren't, there’s been considerable discourse on Twitter, on both this and “big dick energy”, most recently in response to the Thunberg tweet involved in this incident.

> When did it become acceptable to shame men for the size of their penis?

Its not new to do that, at all, but “small dick energy” doesn't do that, just as “big dick energy” doesn't praise for the opposite but instead references a different trait stereotypically associated with it (which “small dick energy” plays on by referencing a corresponding and opposing stereotype. (Which may be problematic on its own, but is different from shaming the target for their penis size.)