I don't smoke the juul vapes, they're not the only company that makes nicotine salt juice. Nicotine salts are made by adding an acid to freebase nicotine, which is still made originally via extracting nicotine from tobacco and processing it with ammonia. If you smoke nicotine, you're inevitably supporting large tobacco producers, there's not really much way around that.
Then there's the matter of, freebasing an alkaloid makes it more bioavailable to your brain, you may be smoking lower concentrations, but your body's absorbing more nicotine per puff.
Kind of like the difference between snorting coke or smoking crack. Cocaine hydrochloride is cocaine in salt form, crack is the freebase form. Both are addictive nasty drugs, but with crack, you need less to get high, the high lasts longer and in the long term tends to really fuck people up from what I've seen.
Also, the first time I ever heard of freebase nicotine, was when I was reading about how it was added into cigarettes to increase the addictiveness and rush you get.
That cake flavoured one still sounds unappealing. I'd really prefer some kind of savoury or smokey flavour. I've never really enjoyed sweet things.