Final answer:
The concept of abandonment on social media, which refers to brands or individuals leaving a community they have built without explanation, is indeed true and can have negative consequences on community trust and relationships.
Step-by-step explanation:
The statement that abandonment is when brands and individuals build a community and leave it without proper notification or reasoning, and that it is considered one of the deadly sins of social media, is true. This is because social media platforms are built on the concept of community and relationships. Abruptly abandoning a social media presence without informing the community can lead to a breach of trust and significant disappointment among members. It is analogous to personal relationships where breaking up via digital media, like changing one's relationship status to 'single' without informing the partner, can cause confusion and heartache.
Moreover, in the context of marketing and brand management, maintaining consistent and open communication is crucial for consumer trust and loyalty. The act of abandonment runs contrary to these principles. In the larger societal context, fostering false narratives and manipulative marketing practices can contribute to social fragmentation, distrust in institutions, and normalization of negative behaviors.