Unpopular opinion: Safety razors cut down shop trash more than people think

I swapped to straight safety razors a while back because of all the plastic from cartridges. It took some getting used to, but now my shaves are smooth and folks comment on the old school vibe. A couple barbers I know say it slows them down too much. Has anyone else made a switch like this to be more green? I want to hear what works for your place.