That’s a good point, I guess you could say I was taking the argument to the extremes. However, the advantage that you describe simply does not exist, as foreign governments will have already infiltrated every ‘top secret’ base there is and learned their secrets - pretty much guaranteed.
The point I’m trying to make is, if the other governments know these secrets, then why shouldn’t the public of the country that’s made the discovery? Even if all the government did was set up a website or something detailing the progress they were making, at least then only people that wanted to know would, and it would maintain a degree of restriction (ie - people with access to the internet who had an interest in the subject), but at least the information would be there in the first place.
Instead, we have to rely on the ‘evidence’ provided by people who claim to have worked in military (or other) research centres.
“Now be quiet before I rather clumsily knight you with this meat cleaver” - Edmund Blackadder