Malcolm wrote: If not, then there is no problem using any of these things.
No, there is a problem with alcohol indeed in itself. As he was about to leave Tibet for subjugating the Srin-pos, Padmasambhava said to those who call themselves Ngakpas :
"— O Ngakpas! The cause that brings destructions is alcohol.
In alcohol, all the causes for raising desire, hatred, delusion
As well as pride, jealousy, and all passions without exception
Are entirely collected in that (poison).
For this reason, my oral instructions is to avoid drinking alcohol."
(sngags pa phung byed rgyu ni chang nag yin/ chang 'dod chags zhe sdang gti mug dang/ nga rgyal phrag dog nyon mongs ma lus pa/ slong ba'i rgyu kun 'di la tshang ba yin/ de phyir chang nag ma 'thung zhal gdams yin/).
Maybe Guru Rinpoche is not a source good enough for you.
In this testament, he goes on and on explaining how drinking alcohol (chang 'thung ba, not only becoming intoxicated) is a cause for various deficient rebirths (including one human birth characterized by craziness, etc., not to mention all those in various hells, etc.) Then he adds :
" —Because of that, drinking alcohol has been condemned
In (all) series of Sutras and Tantras; (thus I myself), Padma have not proclaimed that you should dring alcohol.
Those Ngakpas from the degenerate ages of the future
Claiming that (myself), Orgyen Pema has said (you can) drink alcohol,
These are not followers of mine:
They are the followers of the black demons.
The individual who makes his own thinking, his own meditation and his own offering (of this beverage),
Drinking alcohol, he is deceiving myself, Padma!"
(chang 'thung de phyir mdo dang rgyud sde nas/ bkag phyir pad mas chang 'thung gsungs pa med/ ma 'ongs snyigs ma'i dus kyi sngags pa rnams/ chang 'thung o rgyan padma'i gsung yin zer/ de dag nga yi rjes 'jug ma yin te/ nagpo bdud kyi rjes su zhugs pa yin/ nga bsam nga bsom nga mchog byed pa'i mis/ chang 'thung padma nga nyid bslus pa yin/).
I guess the advices of Shardza Rinpoche, Nyagla Pema Dudul, Peltrul Rinpoche, and above all Guru Rinpoche himself, among so many others, are good enough for me and very clear and explicit. They contradict all your points (alcohol is not poison, you can drink a little, etc.) systematically.