it's brave to look at other companies receiving cease and desist notices and treat it as a market opening
twitterwebviewer.com was registered in Hong Kong
according to https://www.whois.com/whois/twitterwebviewer.com
Looks fine, they don't care about the notices i guess
the maker - https://peterslab.co/products/twitter-web-viewer
I guess my brain has been cooked by internet libertarianism but what's the basis of a C&D for proxying a website?
Is the legal basis just copyright of the contents?
C&D has zero legal weight. They're just relying on developers being conflict-averse. At my local hacker space, at least five members are in some kinds of protracted legal battles (five different ones)