Again. Just because you don't see it doesn't mean it is not happening. Just like with auto factory floor workers where you assumed they have a diversity problem when they really don't. These things do come up but are rarely national level news. So if you are local to the auto industry you do hear about programs, or problems, about diversity. There is always talk about it around the Big 3 automakers and getting more diversity.
So this just seems like a bias on your part because you don't normally surround yourself with news from all of the work force and are just more aware of Tech Industry. Which is fine as long as you don't try to push a false narrative based on that lack of information.