bash - Functional difference between if-then and command group -

is there functional advantage of using simple if-then statement such as

if [ … ];

over using short-circuit list evaluators command groups such as

[ … ] && { }

of course, if-then standard way of writing it, there actual difference/advantage functional point of view?

using () instead of {} spawn new subshell, creating new scope variables inside if-then block.

not example, commonly seen

condition && foo || bar

is not same

if condition   foo else   bar fi

in former case, bar run not if condition fails, if foo fails.

Addrety