I almost chose nim over rust, but then rust is an industrial machine with a ton of weight behind it. Nim may be the better language for my needs but not as good an ecosystem. Sad but true.
Unless there is a complete rewrite of the borrowing rules and thus breaking changes that's highly unlikely of ever happening. Instead of following what the industry promotes, the same industry that lays off thousands of people on a whim, maybe start following community projects. Do what you like most, don't expect them to change to fit your needs and wants and stop trying to get into every trend that is hot. At least that my mantra to prevent having regrets later on. Good programmers have a future no matter what language they use.
Ecosystem > language awesomeness
Provided that one ecosystem is huge (e.g. Python) and the other one small.
With that said, learning to write production code in a small language allows for certain better developments in mindset (e.g. Stack Overflow? Forget about it) and better in the quirks of the language, which you will see (to a lesser extent) in other languages.