> bash only honors aliases in POSIX mode.
Aliases certainly _work_ in bash (even when not in POSIX mode. What do you mean by "honors"?
Bash will not expand aliases within a shell script unless it is in POSIX mode.
When not in POSIX mode, aliases are only expanded for interactive use.
$ echo '#!/bin/sh \n alias p=printf \n p %s\\\\n "hello world!"' > ok.sh
$ chmod 755 ok.sh
$ ./ok.sh
hello world!
$ echo '#!/bin/bash \n alias p=printf \n p %s\\\\n "hello world!"' > nope.sh
$ chmod 755 nope.sh
$ ./nope.sh
./nope.sh: line 3: p: command not found
I will commonly "alias p=printf" in my shell scripts. This is fine in Almquist and bash when called as /bin/sh, but if called as /bin/bash it fails, because bash only honors aliases in POSIX mode.
In bash, reading with a prompt can be done with "read -p prompt var" but this fails in Korn because it's used for coprocesses. This means that your shell script will not run on Android, because mksh is the system shell.
I could probably think of a few more with some effort, and especially a check of the man pages.
p.s. I didn't downvote you.