I get what you are saying about the reliability of sources, everyone is susceptible to copium. Getting a hold of someone that works in high-end Russian military production isn't exactly something I can just readily do unfortunately I just got to go with the best sources available.
SU-57 production has increased by several times recently. That's what telegram channels are saying anyway.
Telegram channels say a lot of things, depending on the bias of the owner. If possible, talk to people involved in production
I get what you are saying about the reliability of sources, everyone is susceptible to copium. Getting a hold of someone that works in high-end Russian military production isn't exactly something I can just readily do unfortunately I just got to go with the best sources available.