They take up too much time at the check-out...older customers should be 'more mindful of time-poor workers and busy parents'...they were taking up too much space in the aisles to stop and socialise, making it inconvenient for other shoppers in a rush.

https://www.dailymail.co.uk/news/article-12590185/Aussie-shopper-calls-boomer-hour-Coles-Woolworths-supermarkets.html (https://archive.ph/ElVjk)