If we all want mass adoption of Bitcoin there will have to be a better way to secure Bitcoin other than seed phrases.
Seed Phrase is just one way to secure your Bitcoin and no one force anyone to use Seed Phrase as sole solution to secure your Bitcoin.
If there are better way (which also cheap and can be done from any device), then Seed Phrase might be replaced.
If some security expert could take ZenGo through its paces, perhaps examine its code, maybe it will be a way forward.
It's already done, if you see
https://zengo.com/security/, their cryptography system already audited 2 times and both of audit result are available to read.