I don't think that's because of its "intelligence". It speaks obtuse techbro-ese: stringing together words that sound smart to obscure the simplicity of the thing it's describing. In many ways it's the opposite of intelligence.

Opus 5 and Fable 5 in particular suffer from this issue at worse level than most models in the same class.

yep, it is so bad i had to create rules to cut down on the techbro language and domain slang.