Or we can use it as a basis for examining why such a program won't ever exist. A censorware blacklist seems to enjoy the enviable status of being assumed perfect until exposed as otherwise. Then the company's public relations staff issues a weasel-worded press release of excuses. Finally, later, we are told that that particular program may have problems, but there's another one which is better, and the cycle begins anew. But the significance lies in that the claims it made were such an egregious example of statements which were dubious to ludicrous, yet were frequently uncritically repeated in debate.
Obscenity is a legal term of art.
A complex test must be met, and it is a difficult judicial determination. All material is initially presumed non-obscene until such a ruling. Moreover, obscenity is not a constant, not an intrinsic property, but a geographic variable. Just from this, it should be obvious that either X-Stop was lying, or it was a very small list. No great knowledge is required, just basic understanding of the meaning of the terms in the claim.