unislamic to wish happy CNY

if you guys don’t read aiz’s VOI, you would have missed this recent post:

(copied verbatim)
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I overheard this today.

A Muslim colleague said to a Chinese colleague, “I can’t wish you a Happy Chinese New Year because its unIslamic to do so.”

My Chinese colleague just smiled.

Hearing this exchange, really, really upset me. Un-ISLAMIC?? OH, COME ON!!!!!
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ya, come on, man!!! how silly can one get to be???