I don't know if I'm asking this on a correct site but here it goes. I've noticed this trend on many occasions. Examples: recently Russia announced the start of production of new "superweapons" such as their "kindjal" missile, anti missile laser and others. The videos themselves were of extremely poor quality CG and the later revealed laser itself turned or to be just a plastic model which was easily noticable, as if Russians didn't even try to make all of this look realistic. To make matters even more weird, lenta.ru, the pro-government outlet in Russia has written an article on how the laser had a PVC pipe in its construction. North Korea makes absolutely unrealistic claims all the time to prove its superiority, with their new. Venezuelan military recently came out with an extremely poorly made video with a horrible display of tactics or whatever they tried to show off.
Now it's pretty clear that this kind of show is not meant to scare anyone outside of their own country, unless the leaders are so far from reality to think these would have any effect. This leaves their own public as the target audience. The question is, is this really the case, and if it is how effective are these tactics?