All aspects of yoga are true
Including siddhis
It is rare
Those who have it hide. Run away from public
Vishnutirthji Maharaj had the siddhis. And his Gurus
Yogananda, his Gurus had Siddhis
They did not transfer it to disciples to any significant degree
The siddhis like gyaneshwar and Kabir are even more rare
You may get moksha without siddhis. Even that is a big thing
Bhavin