according to perun this started happening some time ago with share of destroyed BMP-1 rising and BMP-2 falling (BMP-3s seem to be destroyed at a constant pace probably meaning that they are manufactured all the time) same thing happening with older models of tanks appearing in larger numbers https://www.youtube.com/watch?v=ctrtAwT2sgs
according to perun this started happening some time ago with share of destroyed BMP-1 rising and BMP-2 falling (BMP-3s seem to be destroyed at a constant pace probably meaning that they are manufactured all the time) same thing happening with older models of tanks appearing in larger numbers https://www.youtube.com/watch?v=ctrtAwT2sgs