Under the TPP's original terms, a country could limit the exposure of the owner of such a website to prison time, or to the seizure and possible destruction of their server, on the grounds that by definition their infringement didn't cause any lost sales to the copyright owner. (Note that they would be liable for civil damages to the copyright owner in any case.)
Although a country still has the option to limit criminal penalties to “commercial scale” infringements (which is so broadly defined that it could catch even a non-profit subtitles website), the new language compels TPP signatories to make these penalties available even where those infringements cause absolutely no impact on the copyright holder's ability to profit from the work. This is a massive extension of the provision's already expansive scope.
Perhaps most concerning, however, is the fact that this means those stiff penalties apply even when there is no harm or threat of harm to the copyright owner caused by the infringement.
Think about it. What sense is there in sending someone to jail for an infringement that causes no harm to the copyright holder, whether they complain about it or not? And why should it matter that the copyright holder complains about something that didn't affect them anyway? Surely, if the copyright holder suffers no harm, then a country ought to be able to suspend the whole gamut of criminal procedures and penalties, not only the availability of ex officio action.
This is no error—or if it is, then the parties were only in error in agreeing to a proposal that was complete nonsense to begin with.
A complex system that works is invariably found to have evolved from a simple system that works.