It is solved if phones use RCS. RCS allows many of the features you love in iMessage - e2e encryption, typing indicators, large files, delivery receipts, reactions, etc. And it is all standards-based and backed by the carriers.
Android phones do support RCS. Apple will not implement it. Apple will only support the bare minimum of SMS/MMS and then people wonder why it doesn't work well.
Carriers have worked to improve messaging. And Apple won't work with them, preferring to make "green bubble" a horrible experience. People should be outraged that Apple is able to e2e encrypt their chats but refuses to implement the standards.