The point is that you still have to make sure those tools are installed on the system, and compatible with the code you wrote. Standard CLI programs we rely on in our Bash scripts can vary dramatically between Linux distributions and OSs. If you want portable Bash code you need to bundle it in a container w/ all of its dependencies, or be very judicious about what programs and program features you use.

I'm not bashing Bash, I use Bash all the time and it's enormously useful. But it has limitations and tradeoffs that make me reach for other things more often.