This is true. A lot of people put their wrist wraps on wrong too, which doesn't help. They should slightly overlap the wrist joint itself so they keep your wrists straight.a MAJOR tip would be to control your wrists and make sure that they are in one line with the arm instead of folding them over - most people dont control that, you can handle a serious amount of more weight if you check your wrists.
The #1 biggest bench mistake that I see is people not keeping their upper back/shoulders tight. People lie down on the bench like they're going to take a nap, and then try to bench that way. On the other hand, retracting and depressing your shoulder blades will give you a more stable platform to press from, keep your shoulders healthier (which is HUGE, shoulder problems are the most common injury I see on bench), and let you press more weight. That scapular motion is also the same motion that arches your back...if anyone says not to arch the bench, they don't know what they're talking about, as even a bodybuilding-style bench should have a small arch, as not only is it safer for the shoulders, but making it into a slight decline increases lower pec activation while keeping upper pec activation the same (Mike Israetel explains it by saying it exposes more of the chest to stress while simultaneously preventing your shoulders from taking over the movement and also keeping them safer). Obviously with a powerlifting-style bench, an even bigger arch is preferable, since it has the same shoulder-health benefits, while also further increasing how much weight you can lift (by bringing the lats into the motion as movers) and decreasing ROM, all while not actually risking back injury (weight is loaded in a way that won't expose the spine to very much shear force, and also discs don't herniate in that direction very often at all).