Half of your points are not part of the current draft. The dispensaries from last years key issues paper are not even pursued anymore beyond the evaluation region concept in the "2-column-model" ever since the EU commission gave feedback on it. That also made the question of taxation moot for now. Contrary to popular believe Germany cannot just change EU laws. With only a handful of countries in the EU making efforts to get any decriminalization going in their own countries a change to the EU's drug policy is not gonna happen. The majority of member states are just not interested, there's no wide support for the issue in Brussels.

Is the 200m vicinity rule stupid? Maybe, but it has precedent. Malta has the same rule in their respective law it enacted at the end of 2021, only it's 50m further. Malta is also the only EU-country that even has legislation regarding Cannabis Social / Growing Clubs. The clubs in other EU-countries (Spain and Belgium?) all operate in legal grey areas.

The security requirements for homegrowing are not strict at all. All you need is a lock ('mechanische oder elektronische Verriegelungsvorrichtungen'). If you grow in a greenhouse outside of your living space it needs a lock. If you grow inside you living space I suppose there are locks already present. If there are kids around or other people that should not have access, lock the room, obviously. Keep your produce in a lockable container. That's it. Sensible stuff. Maybe you should actually read the current draft: https://www.bundesgesundheitsministerium.de/presse/pressemit... (pdf at bottom of the page; don't skip the 'Besondere Teil').

The idea that Lauterbach was never a fan of the idea is simply wrong. He publicly expressed support for the idea during the coalition negotiations. The suggestion that the SPD (or any of the other Ampel parties, for that matter) in a potential upcoming coalition with the CDU would repeal the very law they just enacted in the former coalition is utter nonsense.