It seems to me that any degree like History, English, even Law from lower ranked universities is very under-valued by employers.
Basically, any essay based subject that doesn't have a significant quantitative element seems to be regarded as a soft degree by most employers and as a consequence not regarded as proof of the degree holder's ability to actually do anything of any value.
I think most employers look down on Arts degrees because they want people with a proven technical aptitude and ability to deal with quantitative data, and the majority of Arts subjects simply don't teach those skills.
If anything I think it's reached the point where many employers actually sneer at Arts degrees and have a tendency to dismiss Arts graduates as lacking in practical skills, lacking in Maths skills and essentially being of no value to a business.
The ability to write articulately doesn't really seem to be regarded as much of a skill by most employers. Employers want hard skills, people who can crunch the numbers and understand technical issues, not people who can write nicely.