"The updated MSA with Industrial Scientific has been approved and we have begun migrating from the MX4 quad gas monitors back to the Tango single gas monitors. Based on current inventory numbers, our new approach should save Permian Resources as a whole at least $1.9MM a year."
The first paragraph of that email is about saving money. Not about how a 4gas monitor protects field employees better than a single gas monitor. But hey, if a few employees are k–led or hurt because they didn't have the best monitor out there, that's just less overhead which the company has to pay.