Good morning, this is the so-called universal mobilization. The standard for armies based on mobilization development. Although professional armies also use it in difficult situations.
If there was an emergency in the UK to increase the size of the British Army, and there is no time to collect volunteers, the same thing would be done.
The Ukrainians are also mobilizing the same people as Russia. In contrast, Putin is a tsar and they have never cared about the fate of the Muscovites.
You do realize that they took random people from the countryside for 25 years of compulsory service until the Crimean War? Ba, they didn't even have barracks!
Barracks and other "western" facilities were introduced only after the Crimean War as part of the reforms, I can't remember the name of the general who introduced it but he was a Baltic German, and on the basis of these reforms the Russian Army and the Red/Soviet Army resisted until just the Serdyukov/Shoig reforms.