[gkbrk]

Hackers are not exploting machines. Instead, the users have configured their media players to interpret that MP4 file as executable code.

[fafzv]

Interpreting an mp4 file as executable code is not a feature of a media player, not to mention there's no way to disable it. Bad analogy.

[jeroenhd]

Similarly, browsers don't have a way to disable loading any third party content.

[ranger_danger]

This would increase your fingerprint substantially, which is very bad from a privacy perspective.

[Krutonium]

TIL AdBlockers and co don't exist.

[fafzv]

They have an extension API for that purpose.