I disagree. If you are a even modestly decent programmer you know to configure autoindentation so that you never need the tab key for anything. I cannot imagine a scenario where I would need the tab key in insert mode (except a very fringe case where I need to enter a tab character in a literal string and for some reason there are no escapes like \t. But then again you can still ^V^I)
can you point to a minimal example where vanilla vim autoindent cannot cope with python code editing? I never found any situation where I had to press the tab key