Speaking to the BBC, Mr Renshaw said Keeley was a “hugely vulnerable character”.
“She needed alcohol every day, she could not say no to that source.
“The voyeurism is what I’m most offended by, people filming saying how wonderful she is but they valued her for her entertainment factor, not as a human being.
“She needed love and support, not someone taking videos and posting them online.”
In the social media clips, Keeley appears to be under the influence of alcohol while singing.
Mr Renshaw added that social media companies “can be a source of joy” but should “take responsibility” for their content.
“It is obvious that some vulnerabilities are ridiculed, whether that’s scantily dressed Friday night revellers being filmed inadvertently flashing their underwear, or someone more obviously incapacitated through drink and drugs.
“I also think reportage and ridicule are relatively easy to distinguish. But platforms thrive on watchable content.”