Is the lack of answer to prayer for someone who watches movies that have been described as: "Indeed, he who watches these films is like a thief, but not in every respect," due to the fact that consuming unlawful earnings is among the impediments to the answering of prayer?

The fatwa is that it is impermissible to watch pirated content without the permission of the copyright holders, and one should abstain from doing so. Committing sins may prevent the acceptance of supplications, but not all supplications of someone who commits unlawful acts are rejected.