I am relatively new to the game. Been playing off and on for awhile, and have my Ranger lvl 20 and ascended. Got to the ICoS and see everyone spamming for 'infused'. Now- I looked up infusedand see it comes after this place(I think). I am not infused. Seems either I missed the 'timeline' to get infused, or people have gotten past this mish and gotten infused only to later return.
Question is:
Should I be infused at this point? Or have I followed the story and just have a harder road ahead? Those Mursat boys sure hit hard

Thanks in advance,