Anybody who reads such bull**** would know that it's not true. Alina simply PEAKED exactly at the right moment, that's a very different thing than "having a streak/being lucky".
A peak is sth you work towards. She worked her entire life for that peak and got there just at the right moment and Evgenia was unfortunate to start declining just at that same time.
It's just what happened with Adelina Sotnikova. I can't recall her ever having two clean programs in her entire senior career, correct me here. For the entire 13/14 season she was totally unstable and did not land a single clean 3Lz-3T, never finished her programs on time with the music etc. But then in Sochi it all came together for her and she had the 2 best performances of her carreer.
Luck? No, simply delivering at the right moment.
For some it happens for others sadly the timing isn't right.