Why have I never seen electrogravitics mentioned in this sub?

I’m sure I’m going to regret making this just a short post very soon, but:

There’s a well documented evolution to prospective antigravity technology done by the US military in the 50s, via Thomas Brown, with industry claims it was successful before going dark in the 50s. Why have I never seen it discussed here? Even if it’s false, we discuss potential things here all the time.

Unlike a lot of other theories, this is at least linked to some rigorous mathematics in the form of subquantum kinetics and actual university experiments.

Have you guys just not heard of this?