In general, yes: long telephoto primes are usually favored for their better optical performance and wider maximum apertures, while telephoto zooms are chosen for convenience and framing flexibility.

For wildlife and bird photography, the tradeoff is usually:

• Prime: typically better sharpness/performance and a faster aperture.
• Zoom: more versatile because you can adjust framing quickly.

At very long focal lengths, many photographers still choose primes when maximum performance matters. The community answer also notes that in the 400–800mm range, people often opt for primes for better performance, and may crop if they need a tighter composition.

That said, zooms remain popular overall because they’re more convenient in changing situations. So the choice depends on your priority:

• If you want the best image quality and aperture, a prime is usually preferred.
• If you need flexibility in the field, a telephoto zoom can be more practical.

So telezooms can absolutely be worth it, but usually for versatility more than outright sharpness.