Why can we not be critical of new inventions? Should we not be trying to make things better? To me thats like making the argument that because we have coal plan

Why can we not be critical of new inventions? Should we not be trying to make things better? To me thats like making the argument that because we have coal plants today means we should have no problem generating XY new plant because it's not worse than what we have now. BTC is old, the possibilities have been proven but I think it's totally fair that we try to get somewhere more efficient than what we have now.