I see this sort of thing all the time. Even the at well known, popular, & "reputable" Ghetty Images, I regularly see them posting images with their water mark on, demanding money for them, & blocking even the watermarked images from being downloaded, when I know beyond a shadow of a a doubt, that they do not own the image. In many cases they were stolen from dead people, & they now claim all rights to them.
Sometimes they just purchased old photos from an estate or auction. Just because they bought a 100 year old photo album at an auction does not give them a copyright to the photos. They may have to right to post or re-sell them, but they can't have a copyright to the images in the album.
It would be like me buying & restoring or modifying an old antique Ford. After I'm done, it doesn't give my patent rights to Ford or copyrights to it's design. It may even be nice that someone spent the time & money to save/restore something from the past, but that doesn't mean they automatically own or have exclusive rights the past. We all have the right to save & preserve history, but we can't have exclusive rights to history.
You can sell a history book. But you can't own the history in it.
I see this when trying to post stuff on youtube too. You can put a musical soundtrack on a video that is public domain music. The tune may have been written over 100 years ago, recorded by the old Edison company. Or it's a very old classical piece performed by a USA military orchestra/band, that clearly states that it is public domain. But dozens of "copyright" copyfraud companies will claim rights to the music, just because they collected all the public domain material, burned it onto discs, & put them up for sale. They're claiming rights as the distributor or publisher of material, when they don't actually own the material itself.
I've even seen them claim rights to the sound of crowd noises, applause, or a cat meowing on a video, just because a disc that they burned also has crowd noise, applause, or a cat in it.
There's a public domain horror film from the 1950s on my youtube channel. Some of the sound effects in the film were used in the background in a 2009 Rap song (if you can call rap a song). Every month, I get at least a dozen copyright claims against that movie by companies claiming to own the rights to the rap song, accusing me using the rap music's audio in the movie.
The movie's audio was recorded in the 1950s, & they hadn't invented rap then. They couldn't have "stole" the audio from a 2009 rap tune. And the rap song claims themselves are a fraud anyway. How could a dozen or so different copyright companies claim rights to the same song every month?
But every month I have to waste the time to file a dozen or more disputes against their claims against the movie, & wait just about a month for the movie to be cleared again. But by that time there are a dozen more complaints from different copyright companies about that same damn song that has the movie's sound effects in it.
There is no such thing as you can't download & save an image you see on the internet. If you can't right click & save or save it in other normal ways, there's at least 100 ways around it to save it anyway. Just google the problem or look for advice/add-ons for your browser to do it. If it's too hard or won't work with one browser, use a different browser. There's no harm to have more than one browser or even 6 browsers on your machine. Except or Chrome, explorer, & edge, browsers don't run stuff in the background when you don't run them. They just sit there turned off until you click on that browser to start it.
I keep Pale Moon, Firefox, & Opera on my machines because I need all of them for different stuff. They each have at least that one special thing that another browser can't do or can't do easily. It only takes a second or so to open up another browser if something doesn't work they way you want. You can use more than one browser at a time too. It uses hardly any more computer resources than opening up another window in the same browser.