"one-trick-ponyism" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "one-trick pony",
        "3": "ism"
      },
      "expansion": "one-trick pony + -ism",
      "name": "suffix"
    }
  ],
  "etymology_text": "one-trick pony + -ism",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "one-trick-ponyism (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ism",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2003, The New Yorker, page 17",
          "text": "Finally delivering “Room on Fire,” the follow-up to their much ballyhooed debut album, the well-heeled but stylishly bedraggled locals try to dispel accusations of one-trick-ponyism.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The state of being a one-trick pony."
      ],
      "id": "en-one-trick-ponyism-en-noun-LLgRTKjG",
      "links": [
        [
          "one-trick pony",
          "one-trick pony"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "one-trick-ponyism"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "one-trick pony",
        "3": "ism"
      },
      "expansion": "one-trick pony + -ism",
      "name": "suffix"
    }
  ],
  "etymology_text": "one-trick pony + -ism",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "one-trick-ponyism (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms suffixed with -ism",
        "English terms with quotations",
        "English uncountable nouns"
      ],
      "examples": [
        {
          "ref": "2003, The New Yorker, page 17",
          "text": "Finally delivering “Room on Fire,” the follow-up to their much ballyhooed debut album, the well-heeled but stylishly bedraggled locals try to dispel accusations of one-trick-ponyism.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The state of being a one-trick pony."
      ],
      "links": [
        [
          "one-trick pony",
          "one-trick pony"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "one-trick-ponyism"
}