Can you get things done in python/c++ sure, but the two language problem is a well known issue, and python has a number of problems. People certainly want a better option, and google investing as much as they did validates that notion.
So I think that's the good news--because of the more independent nature of the work, you generally can win data scientists over to a new language one at a time, you don't necessarily need to win over an entire organization at once.
Getting a company or a large open-source project to switch from C++ to Swift or Rust or whatever, seems much harder.