It doesn't matter what color you are. It doesn't matter where you're from. If you create something like what Dijkstra created back in 56' (undeniable innovation), then no door will remain shut. That's the beauty of Math, CompSci, or STEM as a whole. Not to be too blunt, but I'd rather we keep this soft, "everyone should be accepted" nonsense out of CompSci. The cream will rise to the top. Anyone complaining just need…
This either means there's no one that smart or original in the last few generations - possible, but something of a stretch - or the system isn't successfully selecting, motivating, and rewarding people with that level of talent.
My suspicion is that the top people are working in the private sector, and many of them are doing very highly paid but questionably useful work as quants and system engineers.
Building things is fine, but of course it's not academic research - which is defined by the creation of game-changing concepts and philosophical structures, some of which happen to be mathematical.