dwarf bonus not the highest? i call bullshit. they literally do not drink water unless hospitalized from an injury. otherwise they consume only booze. if for some reason warforged can drink AT ALL, and not just like, combust the alcohol in an internal ethanol furnace, then dorfs should drink them under the table.
Viewing post in Drinking & Intoxication: A D&D 5e Supplement comments
i made this years ago at this point, but i do believe that was my rationale for warforged being able to drink more than a dwarf. they just burn it!
but of course if you want to use it, you can mess with the modifiers as much as you like.
honestly, these days i probably wouldn't even use this at all, and just assign disadvantages as felt dramatically appropriate.