I'm gonna take the other end of the luddite argument— this is cool as hell and they should lean into it more. Discord has proven that an app platform hiding underneath IRC is hugely popular. Email with the power of discord integrations and bots would get me to up drop gmail immediately.

No, thank you. E-Mail is designed to be an analog to, well, analog mail. I expect to open the same e-mail 5 years later and see it intact, in meaning sense.

For interactivity, we have web pages, and they seem to work fine.

This doesn't compare with Discord, because Discord is meant to be a "chat" platform for ephemeral issues to begin with (yet it's abused as a permanent platform), and AMP for e-mail is abusing a platform designed for permanence for temporary communications.

That's a bad idea(TM).

The use case you described is genuine. But the problem I see here is the insistence that the email platform should fulfill those requirements instead of creating a new platform and letting it win the market on its own merit.

People have certain expectations from emails, which have remained largely unchanged since the emergence of the internet. Those include a federated and fully open platform, immutability of messages that make it valuable as communication records, privacy afforded by plaintext, simplicity of use, etc. Many changes have already ruined some of those qualities of emails. For example, introduction of HTML in emails have converted emails from a messaging platform to an ad and tracking platform, forcing many clients to block dynamically loaded resources. Quoting of prior messages have become a complete mess. But worst of all, the email platform is arguably no longer fully federated, now that it's nearly impossible to self host email servers.

It wouldn't be a stretch to argue that changes like these are intended more to centralize the email network than to add features to it. AMP is a clear aggression in that step. It's telling that neither AMP for web, nor AMP for email survived once Google was forced to stop pushing the so aggressively. Makes you question who wanted it so badly and why.

Discord is the worst platform of all. All content is hidden for outsiders, non-indexable by search engines, its the prime example of non-open siloed knowledge. To this day I will not use a project if it heavily relies on discord. All of the content could be gone at once, at the whims of one company.

Such an "interactive" use would need to keep the basic structure of email; for example, a bot you can email and it talks back to you. (Such things have been tried before, but never really caught on.)

If Discord had the same spam or mass marketing problems that email and postal mail have, nobody would willingly use Discord. As it stands, the primary purpose of email is to get authentication codes emailed to you so you can login to other things.

It could be cool as hell if it would be used for any purpose other than sending marketing communication. But, unfortunately, we live in this world.

Discord is not built on IRC. It's a completely custom, proprietary thing. "Servers" are not separate machines, as they are in IRC land, they're just groups of channels.