I've lost count of companies & individuals ripping off our illustrations and reselling them bundled into their templates.

Especially on a $9 template, the odds of them being properly licensed at that price point, I'd be surprised.

In this case, the author mentions it's an editorial piece for a magazine. ( https://dribbble.com/shots/1553377-Changing-Homes )

In light of the fact that the template you've linked looks exactly like recallbee.com, the author's comment "Thanks, I actually copied the image to see what it'd look like in place and forgot to take it out" seems disingenuous.

Not really. He just bought the template and customized it, and I imagine he wrote his own back-end as well. After all, it's just a bootstrap theme.

Seems like an honest mistake in using this theme, though taking an image from bootcamp is a little weird, probably just forgot but it should never have been in there even in a mockup.

The theme authors themeum should be ashamed of themselves though, and it looks like their theme has been swiftly deleted as it is now 404.

http://www.themeum.com/

Looks like they just shamelessly rip off people's copyright work to put into their themes, first image from one of their premium themes came up on tineye as all rights reserved:

http://demo.themeum.com/#organic_life

https://www.flickr.com/photos/36161769@N05/5896987315

Seems really unlikely that template has licensed all those images either given it's from a template farm that looks like they churn these things out and the many sources.

According to this, they're all Creative Commons-licensed: https://wrapbootstrap.com/theme/triangle-multi-purpose-templ...

I don't really know if I believe that, but there we are.

Note that he/she doesn't say which Creative Commons license. It could be a non-commercial license.

Besides, I don't see any attributions to the artists for these images (which is required for all the various Creative Commons licenses).

I highly doubt this theme is legitimate. OP, be wary of using this theme.