Yes, but there where you should have copper on copper atoms touching of the two conductors, or Cu and Al (which is actually not so nice), at this point, you add another layer of something. And this something is less conductive than Cu, even if it is silver dust.
The other badly prepared parts, where no metals touch, get now some paste with a resistance of 1Ohm. Which is great, but does not add much to the correctly touching metal connection of far under 1mOhm.
So basically, adding this paste, increases your contact resistance. And 1 mOhm at 100A is 10W of loss at this point. Edit: 0.1miliOhm is 1W of loss.
Do you have equipment to measure the resistance of your connections with and without the paste? I dont have the paste, so i cannot prove my point by evidence.