The author may get further if they put love of communication over love of language.
"Rubbishing" is a worthless gerund. Is rubbish even a verb anywhere?
https://64.media.tumblr.com/32cb3be24eb46c26ffcaea9bbebc1c62...
Allow me to rubbish your claim. It's a common use.
"To rubbish" is a very common verb, at least in British English.
It's the UK equivalent of the US "trashing".
"v. [with obj.] Brit. informal criticize severely and reject as worthless: 'he has pointedly rubbished professional estimates of the development and running costs.'" New Oxford American Dictionary (2010).