Hiroshima and Nagasaki is currently livable because the bomb was detonated in the sky, the radiation disappates quickly. In constrast, Chernobyl had much more fuel and since the power plant was on the ground, it contaminated a lot of the soil, therefore, it's gonna take much much longer before Chernobyl is ever livable again. A tactical nuke is a bomb that will detonate in the air, and since its "tactical", its gonna have much less yield. Its gonna be become livable again even quickly than Hiroshima and Nagasaki.

I'd say, when there's a policy and its goals aren't reached, that's a policy failure. If people don't like the policy, that's an issue but it's a separate issue. It doesn't seem likely that people prefer living in tents, though. But to be fair, the government may be doing the best it can. It's ranked "Flawed Democracy" by The Economist Democracy Index. That's really good, I'd say, considering the circumstances. They are placed slightly ahead of Argentina and Hungary. OP has this to say: Due to the large number of people moving to urban locations, it has been difficult for the government to build the infrastructure needed for them. The informal settlements that grew from this difficulty are now known as ger districts. There have been many efforts to formalize and develop these areas. The Law on Allocation of Land to Mongolian Citizens for Ownership, passed in 2002, allowed for existing ger district residents to formalize the land they settled, and allowed for others to receive land from the government into the future. Along with the privatization of land, the Mongolian government has been pushing for the development of ger districts into areas with housing blocks connected to utilities. The plan for this was published in 2014 as Ulaanbaatar 2020 Master Plan and Development Approaches for 2030. Although progress has been slow (Choi and Enkhbat 7), they have been making progress in building housing blocks in ger distrcts. Residents of ger districts sell or exchange their plots to developers who then build housing blocks on them. Often this is in exchange for an apartment in the building, and often the value of the apartment is less than the land they originally had (Choi and Enkhbat 15). Based on what I’ve read about the ger districts, they have been around since at least the 1970s, and progress on developing them has been slow. When ineffective policy results in a large chunk of the populace generationally living in yurts on the outskirts of urban areas, it’s clear that there is failure. Choi, Mack Joong, and Urandulguun Enkhbat. “Distributional Effects of Ger Area Redevelopment in Ulaanbaatar, Mongolia.” International Journal of Urban Sciences, vol. 24, no. 1, Jan. 2020, pp. 50–68. DOI.org (Crossref), https://doi.org/10.1080/12265934.2019.1571433.

Mmmmmm I love not being on Reddit

Why mention it? Because the media has a DUTY to call out a corrupt government! Because they're not doing their job!

Are there substantial numbers of Russians who seriously wouldn't be wise to this?

No, just laminated ones. Closed at one end. Easy enough to make or buy. You can even improvise the propellant.

From Aurealisa perspective, the leak may have been a momentary distraction, but it had serious consequences for the person behind it. Hopefully, this serves as a lesson to other potential hackers.