Does wireless charging degrade battery life?
The presence or not of (QI) wireless charging by itself bears no relation to how long the battery will last.

The presence of wireless charging does allow you to often charge the battery (for a short time). That then could allow you to keep the battery level between 30% and 70 % for example and that does prolong battery life as less time is spend below 30% and above 70% is most stressful for a battery.

So if you never use Wireless charging or just charge in the same way as you would when charging using a cable, then wireless charging should not affect battery life.