Note that Aeroflot can still sell direct on their website or call center. I don't know how many of their sales are GDS/Amadeus and GDS/Sabre versus direct, or via other smaller GDS systems.
Edit:
"The share of online and call centre sales grew by 1.5 p. p. to 36.2% in 2019 (vs 34.7% in 2018). Channel-wise, agents remain the biggest contributor to sales with 58.5%. Own sales offices accounted for 5.3% of total sales, flat year-on-year."[1]
So this is hitting that 58.5% bucket, probably most of it. Other stories say their "PSS" support is also in jeopardy, though not decided yet. If that shuts down, the airline shuts down entirely.
[1] http://ar2019.aeroflot.ru/reports/aeroflot/annual/2019/gb/En...