I'm sorry, but i really don't follow your logic, can you try to explain it more clearly?
Languages with very different syntax like Python are of course going to have different style preferences. Eg. Python doesn't have a ?: operator at all, just an inline if-else expression, so the entire discussion of "should you use ?: for control flow" is meaningless for Python.
The classic languages with ternary (C, C++, Java, PHP, JavaScript) all have the deficiency of distinction between statements and expressions. When everything in your language is an expression, the need for ternary disappears.
Python has a ternary operator, which does return a value. It just so happens this operator uses the tokens `if` and `else`. But it's the same thing what you'd write in C or Javascript as `C ? T : F`, would be written `T if C else F` in Python. Different order of arguments and tokens, but it's still the ternary operator and not an if/else block.
You can't get a result from block statements in Python. Just because the ternary operator uses the same tokens as the if/else block, doesn't mean it's the same thing.
let x = if true { 5 } else { 6 };