I want to say that this is really disappointing as someone who is a Biochem and seems like alot of misinformation spread to defend the action taken.
As a Level 50 sorceror I have 15,200 Health. Thats means the Rakata stim on average might heal me 33% of my health. Thats not overpowering or gamebreaking considering the Rakata Stim pack is supposed to be a profession perk for going biochem.
It seems to me the problem is you have made every other crafting professions perks crap. Artifice gets Relics that have no stats on them making them less useful than green relics you can buy from the dark/light vendor.
Why would I want that profession perk? Instead of nerfing something that isnt broken why not make the other profession perks actually nice and useful.