Big basic lifts are rarely “the best” at targeting a specific muscle. That’s not their purpose.
However, many are good options because they allow you to stimulate “decently” several muscles at the same time. That’s BOTH their strength and weakness.
They can also represent a better neurological stimulus, have a greater metabolic impact, and can train you to better use your body.
More targeted exercises are best suited to really maximize the development of a specific muscle or region of a muscle. But doing a whole program using only those movements might be unpractical from a number of exercises and time standpoint.
That’s why my belief is to use big basic lifts as a foundation and use targeted movements to either focus on lagging muscles or to amplify muscles that are more important for the look you want to create.