Earlier quoted context omitted.
I don't know anything about Alacritty. What is unhealthy about the project?
There was a thread about this roughly two weeks ago: https://news.ycombinator.com/item?id=29349240
I can understand this helps to keep Alacritty manageable. Leading projects sometimes involves saying no to features, as they do: https://github.com/alacritty/alacritty/issues/1309
That's just a tradeoff.