You've missed previous half-a-century or so, didn't you?

For species we are interested in - we are that guarantee. For others - why should anyone care? Humans are priority. As for infrastructure: you probably aware we are demolishing and rebuilding it constantly anyway. Compare even modern roads with roads at 1900. As for culture - people change they culture constantly anyway. Any emigrant? Voluntary changed culture? Moved from a city to suburb? Change of culture. Gone to get college education? Change if culture. And cultures themselves are not something remotely approaching anything "constant".

Also, baseless fearmongering is not, and never was, acceptable argument.

Not going to happen. We actually already has survived numerous climate changes. And even adapted to the radically different climates in short time.

That's because political desicion to try to stop the change instead to adapt and use it. Which was as stupid from the start as denying the change itself.

That's a thing: evolution shaped us to have no natural environment", but to adapt sny environment to ourselves.