I think the the York/Tex moments are a little more heartfelt now that I know more about York from season 10. I also feel worse about the way he died.
As for the flashback when Tex first started her training, I think that it has something to do with Epsilon rather than Alpha. I notice that at the end of season 10 Carolina calls the Church we all knew to be Epsilon, Alpha. Maybe she's mistaken or maybe she knows more than Church does about himself as per every other person we are introduced to.
I also think that memory that Epsilon had of Church leaving Tex to train with PF is tainted in some way. Implanted into the unit as a memory. As Church of seasons 1-6 had said, he had memories of growing up and such, even though that is impossible because he is a computer program. So that is why I believe it to be a fake memory that we flashbacked to.
Also Simmons agrees with my theory wholeheartedly.
So I know I am way late to this party. It only took me nine years to realize that his full name is Richard Simmons. I assume that was on purpose. I also assume that joke was meant to be understood in less than nine years.