yes, possibly a waste, not for nothing though. its just a little extra to give it a booth. you do get a much larger return... 30-40% or more. sorta the quality vs quantity thing... but is it worth the huge loss for just a 2 or 3% increase in potency and 10-15 in yield? to some, it might not be.
personally, I dont like hash, and happened to have a little bit. so I just ran it in with the butane. was just 3 or 4 grams or something its something ive only done once or twice though... I dont think too many people make, or try to buy bubble hash just to run it with BHO. its kinda just an experiment once in a while. overall, I definitely woulda gotten higher, and more times if I had just smoked the 4g of bubble hash. but oh well.
some of these guys grow like 5 lbs a month and only smoke 1/4 lb... so they got a lot to play with/waste.
ive had guys with BEAUTIFUL full melt bubble hash. had about 8 ozs of it.. more than they knew what to do with. they dissolved one in everclear, and filtered it, and evapped it. and WOW it was nice oil made with like 30 something grams of pure bubble hash. got a 80% or so yield he said. when I did it I only got 50%.
but yeah... theres def some benefits to running pure bubble hash.. if you can afford it!!! theres defintiely some big dogs out there in the weed game that deal with MAJOR weights (300 grams of oil at a time. 100 cans of butane runs. bubble hash runs that produce dozens of pounds!, filling up cup cake trays worth of oil to be put in the chamber, etc...)