Questions asking about how HDL constructs relate/imply hardware or vice versa, I think belong on Electronics.
Question about testbenches, compiler errors feel like programming questions to me, and StackOverflow already does a good job of answering them, Verilog Qs on StackOverflow.
Example questions I think could be migrated :
I would like some guidelines on this topic as I see a number of posts which I think would get better answers on StackOverflow, but do not want to unnecessarily/incorrectly flag them.
Update Based on the The Photons feedback I understand that downvotes on meta are against the idea, not the question. From the down votes against migrating questions implies the community welcomes HDL based questions.