If you're annoyed that an author/artist/composer/etc. seems to have abandoned a story/comic/album that you enjoy, just send them a note asking if they're planning to return to it soon.
Moaning comments and passive-aggressive tantrums are unkind and counter productive.
pastrigret VERB [TRANSITIVE] /ˈpeɪstrɪˈɡret/ Worrying about carbs while eating a whole box of fruit pastries. Feeling grateful when they're finally gone! Then, half an hour later, making tea and wishing you had a lovely fruit pastry to go with it.