The first thing on their main homepage is instructions to curl a shell script into Bash using Sudo. I find the argument that they prioritize security unconvincing.
And also, you shouldn’t rely on docker for safety, it might or might not work but docker isn’t a reason to just run an untrusted program.
I'm not saying security is about perfection, but encouraging people to curl something to the shell with sudo is poor practice. I get that it is a newer piece of software, so I am forgiving. But getting it packaged into Homebrew, WinGet, Nix, etc. is more ideal. Some of them may verify a signed package, ensure reproducible builds, track changes for proper uninstalls, etc.