>I literally just told you that those problems are caused by [...]
My design for example has no constraints,

Yeah, I literally discarded your argument because you effectively told me that you literally don't even begin to understand the scope of the problem.

Creating a limited situation example and making a broader claim is like saying that scientists have cured all cancer because they were able to kill a few cancerous cells in a petri dish. It's like claiming that there are no (and never will be any) security vulnerabilities in Microsoft Windows because you logged into your laptop for ten minutes and didn't notice any problems.

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>When were all building a Dyson sphere in 300 years I'll be laughing at your doomer comments.

The funny thing is that there's no one who wants to get to the "good stuff" of future society more than I do. There's no one who hopes he's wrong about all this more than I am.

But sadly, people's very eagerness to get to that point will doom us as surely as if you kept your foot only on the gas pedal driving to a non-trivial destination. Caution and taking our time to get there might get us to our destination some years later than you want, but at least we would have a chance of getting there safely. Recklessness will almost certainly kill us.