It's clearly not for you, you built yourself a version that works for you.

It's not me for either currently but that doesn't mean it's not useful.

Although there's a ton of other providers with their own more or less managed/opinionated flavor of agentic sandboxes.

We cataloged a bunch here

https://engine.build/lab/agent-sandboxes

I'll also add boxes.dev to that list.

But yeah overall your tone was asshole flavored lol. Maybe being a bit of a hater too.