copy(blog): strip AI-isms across all 8 posts

Structural: remove bold-header list patterns (Opacity/Inconsistency/
Capture/Fragility, You learn X., Sponsorships pull out., For players:)
so they read as prose, not LinkedIn listicles.

Line-level: cut LinkedIn hook opener, Here's why: frames, throat-clear
phrases (Let me be clear, We know this, We want to be honest about it),
redundant double openers, the AI triplet blockquote closer, and over-
qualified adjective…