Anyone with a Google Account who uses Google Maps can submit edit suggestions, but they are all reviewed before publication. You can inform them if the business doesn't exist, has a different address, new website, existing website doesn't work, new business hours; all sorts of things. Not limited to businesses: includes bus stops and train stations, historic landmarks, basically anything where you can drop a pin and see a database entry.
This is probably linked to the process for Search. It's called "crowdsourcing".
The article mentions having control of the Google Business Profile. It was sometimes called "Google My Business". You can register and verify that you're the owner, and then you'll have tools to reply to reviews and manage your own Maps entry, etc.
I figured out how to solve this captcha with a bot! :) The trick is to strafe left immediately after spawning and continuously press the spacebar. Then, just wait for the enemies to move in front of you and get eliminated. :)
None of those are options for this thing. They are all real DIY projects that some people have made. Some of these especially 3d printed ones have 3d models made by authors of each project. Still takes time to make clean and consistent illustrations out of them, probably less bad once you do it hundred times in a row and have a good workwflow. But for others especially ones made of cloth there is no choice other than drawing them by hand. I guess you could speedup the process by tracing over a photo. As for stolen without credit aspect, at the bottom of each page there is a projects name, author and website where it was posted, it also functions as link. One thing that could be better is making links accessible in printed version either as text or QR code of them, currently you can only access them only in digital version.
https://www.google.com/search?q=Three+Rings+CIC&hl=en#irp=ph