Enable the Calibre web server, then use KyBook to connect to it and download the books you want while on the same network as the Calibre server. You can set up a public URL if you want to access them remotely
Yes this just looks like a marketing fad. Folks will change their names to promote something all the time. My guess is that a visual change every so often gets folks to notice. So kinda :shrug: from me ;)
Yeah there's a whole mini scam network that copies programming how-to videos on YouTube and puts new thumbnails on them. So you watch the ad and then get 30 seconds into the video before realizing it's garbage, they've made some a few stupid pennies :(