You fundamentally misunderstand what WeChat is.

WeChat in China is like early 1990s era AOL or Prodigy for smartphones - it’s a vertical solution.

Signal is an encrypted messenger that have bolted on some crypto bullshit. It’s just a nerd tool.

They are only vaguely similar in the remotest of ways and certainly not with respect to what the OP meant, so not really.

no, if you look at relevance today Signal is not relevant.

The technical excellency is lost on most users.

The demography which cares about that excellency also has a large degree of people which don't want a future with a western variant of WeChat. Because it's basically only working with monopolization.

And the fact that signal pushed some crypto is not helping it either. Firstly to many non technical people have lost too much money by either crypto scams or crashes. Then their crypto currency had some questionable technical details AFIK, but I forgot the details. Then regulatory capture of crypto currencies is guaranteed incoming in the coming years (to many scams, market manipulation, hidden high risk investment and usage for crimes especially money laundering) and as far I can tell their coin will likely not get a pass.