this is not true? every single pin has a big button underneath which takes you to the original webpage where it was saved from. and if it was manually uploaded by the user and lacks this kind of metadata, you can scan it visually and it shows you all the other uploads on pinterest which match it approximately, and usually one of the matches has better metadata.
this has been inconsistent over the years. maybe they 'fixed' it but it wasn't not the case before. they were extremely parasitical. you'd click the button and it would just take you to more pins
that only happens when the image was manually uploaded by a user (i.e from gallery). there's not much they can do about it. in that case you can scan it to find visual matches and hopefully one of them has metadata about the original source (but it's not perfect and you have to scroll a bit).
I'll take your word for it, you're welcome to it, but I'd rather it just didn't show up so high in search results.
Oh, and if it could stop recommending pro-anorexic content to my teenager, I'd like that to. It's banned on the LAN but I can't enforce that elsewhere.
It's a dumpster fire of SEO dark patterns and unmoderated shitty content and shouldn't be ranked so high in searches. Google should have routed around them years ago.