As a retired engineering manager, I hired many a college grad. I always asked for a college transcript and went thru each class the applicant took that related to the job I was offering (and noted their grades). Didn’t matter to me what the major was. So, from that perspective, double majoring meant nothing to me. In some cases it would hurt the student as it would require classes that weren’t related to the job.
You can say that college is about “finding” one’s self and exploring different areas. All nice thoughts. But the reality is that employers are looking for the best prepared and smartest applicants.
An engineering major will typically have about a quarter of their required classes to be outside science and engineering; i.e. “humanities” requirements. That, in my mind, should provide enough opportunities to explore. If not, then clubs and other activities outside the classroom, both while in college and after college, can fill those gaps. After all, one will still want to explore and enrich themselves well after their college years are over.