I don't know how much this applies to bipeds or not... I've only really ever encountered this problem when crafting flying cargo disks, and I have no idea whether bipeds might have this issue. If they do, then all the more reason for this to be addressed.
I was making a t5 dragon disk for a friend today. No big deal, right? We got the resources together and I went to craft everything, crafting scales equipped. The first thing I realize is that I'm about 40 essence shaping short for crafting the azulyte at optimum. No biggie, I head to my lair to use my t5 crystal shaper there. But the crystal shaper doesn't give Essence Shaping skill. What's the point of making a really nice machine if it doesn't do what it should?
So I ask my friend to gather more dark azulyte because I was 6 short. Then I change to my stoneworking scales to make the imbued bars... but guess what? The Stoneworking Pedestal doesn't give Stoneworking skill. So now we need more marble bricks, too.
Why am I making this post? Because is makes no sense to me to make a player go to a machine to craft something but not grant them the skill they need when crafting. The only logical exception I can think of is when a dragon uses an anvil to make scales. But when a formula NEEDS a certain machine, that certain machine should grant bonus skill. Makes perfect sense, and saves a TON of headache.