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They didn't mention why they are discontinuing it.

According to a mod in the Discord server, it was indeed a cease and desist: https://twitter.com/linuxct/status/1503081083486810120

According to their reply to that tweet, it wasn't a mod, just someone who had the same role colour.

From their officia Telegram channel, it seems to be for legal reasons: https://t.me/Vanced/197