Do you mean partisan in the sense of Labour/Conserative or something else here?

Because in Australia at the very least the answer is a definite no. In the UK I'd also say it's a no and that Clark's interpretation was quite widely held in his time and is probably still the most popular view today, outside of academia anyway. But starting with John Terraine and leading to more recently Gary Sheffield, William Philpott, Paddy Griffith and many others this view is pretty thoroughly debunked. It's a popular narrative that writers like John Laffin and Denis Winter have put much stock in and it sits well with the mainstream interpretation of the war as merely a tragedy where everyone but the generals and politicians were victims and it fits in well with the battle of the memoirs that happened in t he 20s and 30s. This whole victim/tragedy narrative sounds more like a labour movement one and it has a lot of pull in labour and left circles, but it's equally popular on the right as well.

Most historians worth their salt nowadays hold no truck with the view but it's nearly impossible to kill and still sells a lot of popular history books.