Casting adheres closely to the source material with Benedict Cumberbatch and Martin Freeman as the iconic duo, supported by mostly white British actors; incidental diversity appears in minor roles like a black female doctor (Sarah Sawyer) and Chinese characters in 'The Blind Banker,' which feels organic to contemporary London rather than forced or activist-driven. No race/gender-swapping of established characters, no LGBTQ+ representation as a focal point, no lectures on systemic oppression, toxic masculinity, or identity politics—narrative centers on deduction, friendship, and adventure.

Creator interviews from Steven Moffat and Mark Gatiss emphasize modernization via technology (texts, blogs) for entertainment, with zero mention of diversity mandates or social justice intent. Audience reception at release was overwhelmingly positive for its clever storytelling, with any 'woke' criticisms targeting later seasons or fan theories (e.g., TJLC subtext), not Season 1 itself. This season delivers pure, traditional detective entertainment unburdened by contemporary activism, preserving the franchise's timeless appeal.