Cannot say that those are the user's alts.
From Sunguko's post history, it seems that s/he is from India while Shamm is from the Philippines from some of her posts.  User BARADAR was just created back in August 28, 2021, while the Shamm was back in May 14, 2021. Others were just freshly created this month.
Wallet address connections would be a more viable evidence at these cases, imo.

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@Shamm
It would be better if the user just links her own thread instead of copy-pasting the whole thread.