Too much software engineering is learned on the job, and your job is usually dictated by laymen you have no control over and who may or may not give a damn about your career. You might work at a hygenic, technical garden, you might work at an Agile SCRUM feature factory that de facto prohibits re-factoring.

But University CS programs aren't the proper place for this pedagogy either, and I don't see SWE guilds popping up for a few reasons.