If they actually implemented them they wouldn't be mockups. If they hacked together some shim to get the text represented as in-browser text instead of baked in

If they actually implemented them they wouldn't be mockups. If they hacked together some shim to get the text represented as in-browser text instead of baked into the image, people would waste time shitting on their code. Some people prototype extremely quickly in Photoshop, some people prototype extremely quickly in a text editor. No need to hate. :( I imagine, also, that if there really is any irony there, they do understand it.