This is very clearly an attempt by X to use the legal system to harass people doing perfectly legal things. The chilling effect on speech is the whole point
Can you expand on why you think this has a chilling effect on speech?
I love it when users make up law.
TOU is contract law. It falls into the same vein as “no shirts, no shoes, no service”.
It’s contract law.
We may all hate this (I still morn Apollo) - but legally, ‘I hate it” is not law.
I don't think it's perfectly legal. If I was dumb enough to use X I wouldn't want my posts be used by any other party than X.
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This is very clearly an attempt by X to use the legal system to harass people doing perfectly reasonable things, but are you sure they are legal? I would assume that is against the ToS and I don't think the law makes an exception for cases like this (IANAL of course).