No Belgiums goverment is gonna investigate if it is worth to take them over for free from engie and run then for longer and maybe reopen some, but the study first needs to show if it is viable.
Thank god windows does not copy apple stuff, also its usually apple that is stubborn it took ages for them to agree a mouse should have more then one button.
reusability is mainly done for cost instead of environment, but you need to launch a lot to re-cup the costs, and esa is not a commercial org like spacex.
I do think the ESA rockets use a more eco friendly fuel then others, that is probably more important then some metal on the seabed.
Not surprising that it is faster if you first load the entire thing in memory, but why then use a DB?, and not have your app just keep the data in memory?