Person's dua being rejected due to consuming haraam
Q: Prophet Muhammad (ﷺ) mentioned [the case] of a man who, having journeyed far, is disheveled and dusty, and who spreads out his hands to the sky saying “O Lord! O Lord!,” while his food is haraam (unlawful), his drink is haraam, his clothing is haraam, and he has been nourished with haraam, so how can [his supplication] be answered?
Question:
1. Does this hadith mean that it is "impossible" according to Islam that such a person's supplication (dua) will be accepted by Allah?
2. According to Islam, can the supplications (dua) of such a person whose income, food, clothing are haraam be accepted by Allah, not because the person deserves to have his supplications (dua) accepted, rather due to Allah's infinite kindness, generosity, mercy?