There's nothing wrong with it, but having the ability for people to opt-out (some professional photographers, for example, don't want any kind of usage that isn't pre-approved, even if editorial) would be a way to make it crystal clear whether that user is OK with it or not. What we have right now leaves everyone in a murky area legally, and adds friction and annoyance. "Embed controls" would remove any questions about it, which would give users a say in how their content is used without having to give permission for each usage request, and would protect the people that want to use the posts without having to make a request for each one. Everyone would be covered.

Also, there are many different kinds of uses, some commercial-y. Here are a few:

- Display on Twitter itself (retweet)

- Use in a news story, near an ad

- Display in a Twitter widget on a web site

- Embedded Instagram photos on a company gallery page

- Use in an email ad campaign

- Use on a billboard

The list of things above exist on spectrum of "commercial-ness", and reasonable people can disagree on which they think are OK and which aren't as far as obtaining advanced permission. What many would like to see are much more explicit rules or technical controls so that the ambiguities are removed.

Embed controls might not be ideal from a fair use perspective, but it's a lot better than the "let the courts figure out" situation we have now.

If you're doing a fair use, make your own copy, especially to keep it safe from sudden deletion.

If you're not doing a fair use, then maybe you shouldn't have the right to embed so freely.

I don't see how a no-embed policy hurts anything.