Earlier quoted context omitted.
Its more a commentary on how amateur it is in my respectful view. iMessage is a fundamentally unserious "product" in search of enough collateral flaws to harm those foolish enough to depend on it for anything.
How so? Other than the security issues that get exploited by NSO group from time to time (that appear to be mitigated fairly well by lockdown mode if that's something that's important to you) or the obvious flaw that you can't talk to anyone that doesn't have an iPhone it seems to be a perfectly good platform. The alternatives either have worse encryption (Telegram, RCS), worse privacy (WhatsApp), or the same platfor…
That's because iMessage is a first and foremost a marketing tool that Apple compels users to rely on.