Note: This was already discussed here, but with this question I want to reopen the discussion in hope of more attention and stronger agreement.
- It doesn't break any of the rules mentioned in the What topics can I ask about here? help section.
- Snippets would allow creators to make puzzles like for example interactive puzzles, or small websites that can be used for various types of puzzles, while the question itself stays self-contained because there's no link to an external (potentially dangerous) website.
- Puzzles from PPCG would still be off-topic, since they are contests and challenges. This is not the suggestion I'm making.
- If I'm mistaken and code golf puzzles would be on-topic with this feature, we might consider to only enable code snippets in questions.