When "something" is freely available,free being the operative word,then much like a 'free' newspaper, it's always self supporting.Usage is driven by chance,and readership somewhat mercurial.
Moreover,suggesting that someone is an "accessory to a crime" for viewing said 'questionable content' is flawed.
Example: A woman is raped in a public park.There were 200 witnesses who walked past, but chose not take the matter any further.
There was however,a security camera present that captured the said offense, inclusive of the 200 witnesses who failed to act.
All 200 witnesses have been identified by the CCTV and are now all "an accessory to a crime".