I am glad someone pointed out that article was over 3 years old. I was about to start yelling about "Justine Roberts, co-founder of online forum Mumsnet, said: "I don't think anyone has any beef with moving over for wheelchairs."
I'm guessing Justine's views may have changed a little on that point, after 3 years of threads like this.
Every time we have one of these threads, people say "someone" should start a campaign. But no-one ever seems to want to be that "someone."
If people feel so strongly that this is discrimination, or a risk to the safety, then crack on and get a campaign organised. Like the disability campaigners did.
I suspect a large part of the reluctance to do so is that people know, deep down, that the reasons for a wheelchair space are fundamental and rooted in the need for equality and inclusion, whereas the reasons for buggy spaces are rooted in convenience and the desire for choice.
Nothing wrong with that, but people aren't going to get quite so excited about a campaign for something that would be nice and handy to have, as opposed to something that allows a whole section of society to access an important facility that is otherwise barred to them. The wheelchair space campaign took, in theory, society forward, in terms of equality. A buggy space is just a handy thing to have. People probably won't be dancing in the streets about it.