The situation in Russia is one of total apathy. Maybe 10-15% of the population are hardcore Putin supporters and ultra-nationalists, and even they are held at arm's length by the Kremlin (people who can enthusiastically be cheering you today can be calling for your head as a traitor tomorrow). Maybe the same number are hardcore anti-Putin and want to see massive reforms and maybe democracy come in etc, but they are paranoid about confiding in others about that because of the risk of arrest. Maybe a similar number are mildly unhappy with Putin and the situation and would welcome reforms, but won't do anything about it.
The overwhelming majority of the population has an unwritten "deal" with the government in that they get on with their day-to-day lives and in return let Putin and the government do what the hell they want. The problem and risk with mobilisation is that this "deal" starts to be infringed on. If the middle-aged and elderly part of the population start seeing their children and grandchildren coming home in body bags and they turn on the government, the situation could go from apparently status quo to total collapse very quickly. It was the masses in Moscow and St. Petersburg seeing their children coming home dead from Afghanistan that played a key role in forcing the Soviet government into reforms and then collapse.
This latest move has certainly rattled the cages of that deal, but it looks like by saying that college students won't be targeted and the recruitment will start in the provinces and sweep into the cities only as a last resort, they are trying to heavily mitigate the dangers from that angle.
The main problem is that although Russians are fully capable of saying screw this and ejecting the government with violent force, they have to build up to the "snapping moment" over a fairly protracted period of time (which is what makes it unpredictable). In the meantime there's a risk that if Putin is overthrown, it might be by hardliners who feel he's been far too softly softly on the war and would go far more hardcore on it.
ETA: The Russian Telegram sphere has gone into meltdown over the Azov Battalion prisoner swap today. They are very angry about it, despite the fact they got 250 Russian PoWs back for only 55 Ukrainians (none of the Russians are hugely noteworthy, and they really dislike Medvechuk, the only significant returnee). A lot of people pointing out it's an odd carrot to be waving today of all days.
This post has been edited by Werthead: 21 September 2022 - 10:37 PM