I hope it's because everyone is running ad-blockers and therefor have never seen it (like me).
I highly doubt it thought. It's way more important there to be completely outraged about someone else's opinion.
@FreePietje hehe you might be right about outrage over opinions.
I run adblockers as well, but it doesn’t catch these ‘promoted tweets’, I assume it’s because they’re not served by a 3rd party.
(instance image by мøтħer ¢røω)