If you want to go further, Just don't show blurs. Show blank with centered text "Non-following user media. Tap to open." or similar.
Discussion
already possible
yeah we need that, also opened this:
opened an issue specifically with your suggestion:
The blur is also the reason why people got curious and open it anyway.
Giving it an reason should makes it clear.
Suggestion:
1. Only blur on sensitive media from following users.
2. Blank instead of blur on ANY media from non-following users.
probably can't do this on every image due to battery drain. it makes sense to trust people you follow and only do this selectively on people outside your web of trust.