You pic shows them towards a corner kerb with space behind.
https://i.imgur.com/oeQjcJS.png
They don’t always block the pavement.
They deliver far more to the city than they inconvenience. I say this as someone who has to push a stroller around.
I've been pushing someone in a wheel chair for about a year now. Trust me. This is no trivial matter
https://i.imgur.com/oeQjcJS.png