iMessage is really good because Apple focused on making a great product.
Google just deployed the same logic to remove dislike counts on YouTube, despite those being valuable for users.
The article is not quite correct. The base RCS standard does not include E2E encryption, but at least Google's implementation includes it as an extension. Not an ideal situation -- IMO it should be a required-to-implement part of the base -- but it's definitely there for those of us using Google's infra, at least.
Part of the elegance of iMessage is that E2EE isn't optional.
E2EE is mandatory in Messages.
Backup is optional - my phone has never seen an iCloud backup (all local backups).
I don't think I'm twisting it. Pragmatically, unless you fiddle with the options, iMessage won't give you end to end encryption. So I think it's fair to call it optional.
Kids without phones may even, gasp, be bullied over it. Wouldn't that mean that Google, Apple and all handset vendors benefit from fear of bullying over not having a phone at all?