SLS was also even further behind in development that Starship is... it was supposed to fly before Falcon Heavy. Also the next SLS flight isn't now, but more lik

SLS was also even further behind in development that Starship is... it was supposed to fly before Falcon Heavy. Also the next SLS flight isn't now, but more like 2 years from now... Starship might very well by flying by then(it better be given that NASA plans to use it as the lander). Not sure where you got the idea F-35/B-21 are questionable benefit over existing systems from(we don't know enough about B-21 to say this, and F-35 seems to have proven itself by now).