@whatsthepointthen
What is it your finding so hard to understand here? If you explain why you can't understand this, then we can help you.
This isn't about the rights of the disabled. It's nothing to do with reasonable adjustments or legal requirements for accessibility.
It is purely about sales. If people find it difficult to shop with pushchairs or wheelchairs then they won't shop in that particular place. But if a shop provides a till with a large queue area, and a large space between it and the other tills, and have it outside of the normal queue so you don't block the whole till line then suddenly, they increase their customer base. People on wheelchairs and people with larger buggies will go and spend their money in that shop because the experience is easier.
That's all this is. Increasing sales by making the shopping experience easier for all their customers who have a struggle, wether that is caused by a disability or by a pram. It's nothing to do with disabled rights.
And before you start your nonsense of "but it's your choice to have a double buggy so just don't go shopping If it's hard"... then the shops lose business. They don't want to lose business, hence making space to accommodate those with large buggies and wheelchair users.
And if it comes down to an argument of "it was your choice", well, I was in a wheelchair for a while after I had an accident whilst sky diving. It was my choice to skydive and put myself at risk. It was entirely avoidable if I hadn't participated in that sport. Would I have been less deserving of a space at that till than a wheelchair user in a chair through no fault of their own?
It's not about being nice to disabled people. It's about increasing sales by improving the experience for everyone who has trouble manouvering through the tensa barriers and shelves marking out the queue.