Well, it is about euthanasia when any assistance is given, such as an organization facilitating travel to the pharmacy and the pharmacist supplying the drug with a reasonable suspicion of how it will be used.
And the poster of the thread and I believe suicide is against God's will as well. If one wants to convert finite earthly suffering into the infinite suffering of the afterlife, be my guest.
Some have written that in Biblical times there were no ventilators or feeding tubes to keep people alive (actually feeding tubes have been used for hundreds of years, but have become far more effective for long-term use with advances in plastics). But it is also true that there were no antibiotics or aspirin then either and very few people seem to object to these. But most importantly, there have been amazing advances in palliative pain treatment in the past few decades; pain is a factor in many terminal illnesses, but it can be managed.
Everyone has the right to commit suicide, even if it is a selfish act. I would only consider doing so if I had nothing to lose and no one to leave behind. I would define euthanasia more narrowly. Selling a potentially fatal drug does not mean very much since many drugs are potentially fatal under certain circumstances. Taking someone to a pharmacy to buy such a drug is also not euthanasia. Administering the drug is euthanasia.