Its a bit of both, Linux allows it so cPanel makes use of it.

It is a very good idea and if I had the option, i'd force clients to use the generated pass rather than using their own.

I noticed that too, but most of our clients were complaining that the password is too complex to remember. They need something they can easily remember. We try to create a unique password for them that includes an underscore '_

password generated by cpanel is so secure later we can change

Password stands to secure something and obviously if you real want to secure your private area, password should be complex. cPanel has great feature to generate random complex password.

You might have heard about the cases in which the accounts got hacked due to week password. It's a good habit to use password generator of cPanel or use your own strong password.

Kailash

Unix operating system is always known for its security features. Here in this case what we see is another example of good security. A password generated by cPanel is always too complex to break or predict easily.