Both of the examples I used had mandatory state IDs during their dictatorships. The IDs were not significantly instrumental to the government's power. I don't think the addition of RFID really would change that in the event of a new dictatorship.
But even if mandatory RFID IDs were a critical tool of authoritarian governments, what would prevent the dictator from issuing mandatory IDs after taking power?
First of all, during the Franco government the internet was an academic curiosity and nobody carried smartphones. That has all changed, and the tools the government has to monitor people are way beefier than they were back then. Facial recognition cameras, for example.
What prevents a dictator from issuing mandatory IDs? The resistance of the people. Yes, the government has police, and an army, and fighter jets, etc. But in the past few decades we have seen that insurgencies and popular resistance can succeed anyway -- the US got kicked out of Afghanistan and had a lot of trouble in Iraq, Ukraine is outfighting Russia despite massive disadvantages numerically and technologically, and even in China the government softened the zero-Covid program after mass protests. The people have more power than we think and can resist such things, if they want to.
All I'm saying is I don't see how the pre-existance of mandatory ID under a democratic government would be a significant boon for an eventual dictatorship. I understand that based on principle one might prefer not to have them, but to me they are really innocuous and extremely practical.
>Ukraine is outfighting Russia despite massive disadvantages numerically and technologically
You are somewhat misinformed about the Ukrainian war. Ukraine has 3-4 times less population than Russia, but it started full mobilization early in the war. Meanwhile Russia started partial mobilization just recently. So it was common for the Ukranian army to have a numerical advantage on the ground. Most of the recent Russian retreats can be attributed to the lack of personnel to properly mount defensive positions.
As for technological advantage... It depends. Ukraine effectively has the whole NATO and a number of additional countries as its rear and supply base, while Russia depends only on itself and a bit on Iran. In terms of communication systems, intelligence, and likely anti-tank and anti-ship systems, the Ukrainian army is miles ahead of Russia. Russia has advantage in air, artillery, anti-air, and ground-to-ground rocket systems.
But even if mandatory RFID IDs were a critical tool of authoritarian governments, what would prevent the dictator from issuing mandatory IDs after taking power?