[kernelsoe]

I agree that tech has projects and ideas you could do yourself @home.

Now my question is ... why local structural engineers or other professionals rarely write a blog or an essay sharing their knowledge and experience or just normal expressive posts like you would see on mainstream social media?

[cyberdrunk]

I don't think there's that much innovation in those fields (esp. on individual contributor level), so there's considerably less to write about. The old professions are standardized to a large degree and they're unlike tech where new approaches to literally everything are invented (or, should I say, unleashed upon the world) regularly.