Did the Data Center get canceled? If not, then no it is not ruined and instead what's going to happen? Is someone's going to scrape up a whole bunch of that concrete releasing a whole bunch of carbon dioxide and then someone's going to pour down some more concrete which will increase the CO2 in the atmosphere.
That's for all cement in the entire world, not one data center. This math is not hard. Plastic is roughly 5% of our emissions but you would not point at one straw and say it is worth 5% of all emissions.
That sounds likely to be true. They'll move operations to a temporary building while they build a new one. To some extent their ability to make plans will be disrupted, but the effect those plans would have had on the climate is unknown: the result is just that the oil company behaves in a more stupid and poorly-planned way, while doing some extra construction.
Reading between the lines, you're proposing a kind of all-out war between, on one side, all the oil companies and other industries, and on the other side, a bunch of annoying dweebs who throw soup. I encourage this, I think it would be interesting to find out what happens.