<b>Gutenberg isn't automatically lighter than a builder</b>

<b>Gutenberg isn't automatically lighter than a builder</b>
The "core blocks = zero bloat" line is half true. Test it before you believe it.

— A plain post with 6 core blocks loads ~9KB of block-library CSS, deferred, fine.
— Add one third-party block pack (Kadence, Stackable, GenerateBlocks) and you're back to enqueuing a global stylesheet on every page.
— Block patterns inline a lot of utility classes; copy-paste a fancy pattern and your HTML balloons.

<b>Pros:</b> native, no builder lock-in, blocks render without a runtime.
<b>Cons:</b> third-party block libs re-introduce the exact bloat you left a builder to escape.

<b>Best for:</b> editorial sites that stick to core blocks plus one disciplined block library, not pattern-hoarders.