Learning a new language can be challenging, but there are many tools and resources available to make the process easier. However, using made-up sentences or phrases can be dangerous and may ultimately hinder your language learning progress. Here are some of the dangers of learning another language through made-up sentences:

1. Lack of context: Made-up sentences often lack context, making it difficult to understand how the language is used in real-world situations. Without context, language learners may struggle to comprehend the nuances of the language, including the correct usage of grammar, vocabulary, and sentence structure.

2. Inaccuracy: Made-up sentences may contain inaccurate or incorrect grammar, vocabulary, or pronunciation. If language learners rely solely on these sentences, they may develop bad habits that can be difficult to break later on. Inaccurate sentences may also lead to confusion and misunderstandings when speaking with native speakers.

3. Lack of authenticity: Learning a language through made-up sentences can lead to a lack of authenticity. Made-up sentences often lack the natural flow and rhythm of everyday conversation, which can make it difficult for language learners to adapt to real-world situations.

4. Limited vocabulary: Made-up sentences often have a limited vocabulary, which can hinder language learners' ability to communicate effectively in the language. Without exposure to a variety of words and phrases, language learners may struggle to understand native speakers or express themselves accurately.

Fabricated example sentences have their place in illustrating specific grammar points or highlighting new vocabulary. But after reaching a certain point, all they do is hinder your language learning and prevent you from combining language with context and culture. Using made-up sentences to learn a new language can be dangerous and ultimately hinder language learners' progress. Lack of context, inaccuracy, lack of authenticity, and limited vocabulary are just a few of the dangers of relying on made-up sentences. Instead, language learners should seek out authentic resources, such as books, articles, and videos, and practice in real-world situations to develop the skills necessary to communicate effectively in the language.