I would say that this is completely crazy, but Headway would probably object to that term as well.
Let's not beat about the bush. I'm sure nobody has ever been offended by the term 'brainstorming'. What is happening is that Headway, a worthy but minor charity, has a hyperactive press department dedicated to raising its profile and thus helping it to help brain injury sufferers. Presumably some bright spark thought that a campaign against the word "brainstorming" would be a good way to get the name of the charity INTO phpbb_the papers. So far, so harmless.
Probably the charity expected Merthyr Tydfil County Borough Council simply to bin the press release, but councils have their own dynamics when it comes to political correctness. Their usual policy is simply to automatically adopt whatever linguistic rules any disadvantaged group might suggest to them. Consequently some anally-retentive little pipsqueak told Cllr Smart off for using a perfectly normal word. Cllr Smart saw his own opportuntity to get some local publicity and was on the phone to the local rag in 15 seconds flat. Everybody has had a laugh, Cllr Smart and the admirable Headway have had some free publicity and no real harm has been done.