In another life, many years ago, these flip-flops would have been a signal to young men that those wearing them were, perhaps, a bit “easier” than the others.
Indeed, and sadly the 'safe bus' that these flip-flops are dispensed from will be a spot where evil people meaning to take unfair advantage....or perhaps much worse...of women will hang out around, waiting for insensible women to stagger up to the bus and then flip-flop away...out of her mind from the booze and unable to run from danger in the police-provided shoes.
I think you are confusing “shower shoes” with “come f me shoes”. The picture clearly is of shower shoes.
They should be given a good sturdy pair of walking shoes. The kind with solid sides and round heels.