Possible Clues:

• Made too much of duty to conceal mistake in dictionary
• Too highly esteemed
• Is Dover about to reckon that it's not so good as they say?
• Blown up too much
• Too popular
• Finished with the miserable editor - not so good as he was made out to be
• Valued too highly, not as good as believed to be
• How 05 might do wrong to have made too much of a boy
• 'This writing business ... - - - if you ask me. Silly stuff.' (A. A. Milne)
• Senior to that miserable Edward, but not worth it