So yes while any full hose systems will need the set of attachments, both m/f, (hose end sprayers, hand held sprinklers etc...) need just the female attachment. So if you're anal about planning out your garden plumbing in advance (yes I am), we'll always need more female connects than males.
To Alan from 2020 (who probably has an answer already) - yes take your hoses apart and clean them on a boring and cloudy day once a year before storing for winter. I always have 3 in 1, PB Blaster or WD40 around if needed for rubber after everything is clean. Who wants to buy stuff twice!! Happy gardening, watering or power washing. p.s. I've never had any issues with Gorilla products - Attach em', forget em' and go worry about something else!