Fair enough. Your point was that we weren't involved in any *new* protracted conflicts. Which, is an unfair assessment as he only had a 4-year term. There's no telling what could have happened in a second term. That said, he did ditch people who we were allied to, and that was a detriment to our reputation as a reliable military neighbor/power/ally. When we damage our rep like that, we damage the likelihood people would come to our aid, if called for.
That said, I am aware of the original claim that gathered attention and momentum: https://www.usatoday.com/story/news/factcheck/2020/11/01/fact-check-trump-not-first-president-since-eisenhower-without-new-war/6086636002/
He is also the first president to completely ignore a report suggesting the idea that Russia could be placing bounties on our soldiers. Not only did he simply not investigate it, he dismissed it entirely.
So, while yes, it's true what you say. This minor "accomplishment" is overshadowed by many of his other practices in foreign policy, and cowboy diplomacy that only damaged our reputation amongst our allies. It's kinda like saying "I have had a migraine for a couple days." Then, you smash my toe and for a time, I forget about the migraine, even though it still exists. You then say "Well, you didn't have a migraine for a couple days did ya?"
I am sure, under the same rubrik of measurement of simply acknowledging facts that you're using, Biden is the first president to unreservedly act to completely withdraw out of the middle east in over twenty years, right?