[jph00]

> Mojo is a closed source language that will never reach mainstream adoption among ML engineers and scientists.

[Citation needed]

The creator, Chris Lattner, previously created LLVM, clang, and Swift. In each case he said these projects would be open sourced, and in each case they were. In each case they reached mainstream adoption in their respective target markets.

He's stated that Mojo will be open source.

If you're going to claim with great confidence that this language will have a different outcome to his previous ones, then you probably should have some strong evidence for that.