If you're just starting out or riding casually at moderate speeds, basic heel hold is perfectly fine. Entry-level boots with standard construction rely on the liner's natural compression around your ankle to keep your heel in place, and for mellow riding that's usually enough. You won't notice much heel lift when you're making slow, gentle turns.
The tradeoff shows up as you progress. At higher speeds or during aggressive carves, your heel may start lifting inside the boot, which dulls your edge control and makes your feet work harder. That's when dedicated heel hold features really earn their keep.
The key is checking fit during try-on. Flex forward in the boot—if your heel lifts more than a few millimeters, even a basic boot doesn't fit right. Don't overtighten the laces to compensate; that just causes calf cramps. If the heel lifts noticeably, try a different size or model rather than settling.