I suspect it is because the context of construction operations are calendar based. This allows for detailed planning; careful logistics and protocols that suspend flight operations under anything other than 'ideal' conditions. Protocols for rescue operations are designed around an expectation that operations are likely to happen in adverse weather conditions in rough terrain when minutes might be the difference between life and death.

The operations depicted are not uncommon on construction sites (e.g. when mounting rooftop equipment) and there are OSHA regulations for helicopter cranes. https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=...