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Is the name 'Shinnosuke' a target for teasing?
Literal
'Shinnosuke' [called-という] name [topic-は] teasing [genitive-の] target is [question-か]?
A question about naming culture. からかいの対象 ('target of teasing') is a descriptive phrase for 'something people tease about.' からかう ('tease, make fun of') → からかい (noun form) + 対象 ('target, object') = 'the object of teasing.' しんのすけ is a name associated with the anime character 野原しんのすけ (from クレヨンしんちゃん / Crayon Shin-chan) — a rambunctious 5-year-old. Parents with sons named しんのすけ sometimes worry about their child being teased because of the association. The question is asking whether the association causes mockery.