I love Alacritty, but when I got an M1 Mac I discovered that it was always running in x86 mode. After a couple of hours trying to figure out why… I just switched to Kitty and haven’t looked back.
I've not used it for a few months, but I installed from homebrew as well.
Run `arch` in a terminal. Does it return `arm64`?
Interestingly, I just opened Alacritty on my M1, and it's showing `arm64` now. I know it didn't before. The app has been upgraded because macOS's security tools blocked it when I tried to open it and I had to explicitly allow it.
Maybe it was an issue that they've fixed since I last looked?