This is largely because the Hare quota has the disadvantage that at least some members in larger wards are usually elected without achieving the quota, which can confuse voters.
Y rheswm pennaf am hyn yw mai anfantais cwota Hare yw bod o leiaf rhai aelodau mewn wardiau mwy yn cael eu hethol fel arfer heb gyflawni’r cwota, ac mae hyn yn gallu drysu pleidleiswyr.