Since autumn 2018 there is a steady stream of complains about Aeroflot denying free rebookings on next flights after missed connections due to Sheremetyevo issues. Arised almost simultaniosly with multiple other tightenings like carry-on control posts, etc. Seems like Aeroflot has decided to discipline their passengers in Ryanair way whenever possible.

So,
1. Never ever take short connections on Aeroflot. SVO is a logistical nightmare currently and probably for 1-2 years to come. On one occasion this winter, flying in J in Superjet, I was only able to get to arrivals terminal in SVO 42 minutes after touchdown (!). Those in economy got to the terminal in 50 minutes, and the aircraft wasn't even far away from the terminal, the bus ride itself took less then 5 minutes.
2. 2 hours is probably minimum reasonable connecting time in SVO right now (unless it's international - domestic connection, in which case don't take anything less than 2,5 hours).
3. Do document with photo and video your every step in SVO in case you fear you can miss a connection. This can help in probable debates with Aeroflot. Take pictures of electronic boards, bus rides, queues and so on.