I doubt they'd agree with you on the 'soft' bit, is the thing. Also, lol at the first lines from your link:
"There is no general agreement as to what [space opera] is, which writers are the best examples, or even which works are space opera".[1] They further note that space opera has had several key and different definitions throughout its history; definitions that were significantly affected by literary politics.[1] They argue that "what used to be science fantasy is now space opera, and what used to be space opera is entirely forgotten"
Applicable.