Going fully into IMHO mode though, I think the talk of Putin is a symptom, rather than a cause. The way I’ve read the various articles is that Niger is incredibly poor, supported by increasing international debt and aid contingent upon allowing the West to stage from the nation.
Simultaneously they have their own problems with Islamic and other internal and external threats, which the military has to deal with. It -looks- like the President realized that the situation was ripe for a coup, and had retired some of the generals and tried to reduce some of the (considerable) perks for them, especially the Presidential guard.
So the military (and likely any popular support) sees Putin as a role model, rather than speaking of him as a supporter. Put someone strong who will make the military/nation respected and safe again, and who cares about what it takes to make that happen.
Again, IMHO, but the West’s efforts to export democracy have often fallen afoul of an assumption that embracing Democracy = quick fix to your problems. So a form of representative government takes place, but very little if anything changes for the person on the street. And there’s rarely anyone in a representative government that you can blame easily, or be seen to take responsibility for nothing getting better (or at least not quickly).
So the ‘backsliding’ mentioned in the article happens, a turn to someone with the appearance of strength that can ‘fix’ things. A tendency that recent events across the world points out is a common human failing.
Granted, I don’t think the West or any nation has the political and economic clout to actually DO the requisite nation and economy building to fix the problems, after all, that money could be spent buying support at home, and who wants to create a rival (see Japan post WW2 as an unexpected exception)?
And based on the language used about the inhumane sanctions, I see the military doubling down on Putin’s (and Trump’s) favorite tactics: “Things are BAD because THEY keep making it worse! I can fix it for you, but THEY keep doing BAD things! You are right to be angry at THEM!”
-sigh-