May you plz ELI5 'High-level' ? I'm just pointing out that there are several idioms, nomenclatures, slang, blah blah that when stated "high level" is condescen

May you plz ELI5 'High-level' ? I'm just pointing out that there are several idioms, nomenclatures, slang, blah blah that when stated "high level" is condescending and making it that "i dont need to explain myself to you!!" But yet, you DO have to explain yourself