I don't want to PARF this up and am not stating that this is rational or not, but those articles about the mask mandate becoming permanent are misleading and not telling the whole story.
Here's a link to OR-OSHA's COVID info:
https://osha.oregon.gov/covid19/Pages/default.aspx
Scroll down to the green area to find the info about the temporary rule being extended due to issues with how the state limits temporary workplace rules:
https://osha.oregon.gov/OSHARules/proposed/2021/ltr-proposed-covid19-public-health-emergency.pdf
The OR-OSHA COVID rules all point to the state guidelines for mask usage; the workplace rules relax if the state relaxes the rules:
https://sharedsystems.dhsoha.state.or.us/DHSForms/Served/le2288K.pdf