There's so many things wrong with your comment that I'm not sure where to start.

First of all, nobody is on a vendetta or "dying" on any "hills" here... I'm just pointing out shoddy engineering as I see it.

Deciding to rewrite a project in another language rarely has any practical merits. If it's worth considering, then at the very least it should be thoroughly researched, and not done because the author "feels like it", as they've done multiple times already. If this was brought up in any technical meeting for a project with thousands of users, the person would be laughed out of the room, and for good reason. And, yet, because the project happens to be open source, it should be excused, or even celebrated? That is absurd.

The idea that providing the software gratis and with the freedoms to use and modify it should protect the authors from any criticism with how the project is managed is also absurd. Software should be held at the same levels of scrutiny regardless of its license or business model. There's always a contract between developers and users whether it is made explicit or implicit. Using a project with an established user base as your personal technical playground is irresponsible no matter how you look at it.

> And he added new features (live streaming) with the rewrite.

Ah, yes, I'm sure that would be impossible with any other language but Rust.

> It’s people like you who make maintaining open source projects exhausting.

And it's people like you who don't understand open source and only use it because they get something for "free". See? It's easy to villify someone without engaging with any of their arguments.