We're already getting the Howling Commandos reference. Which 99% of the audience has no idea what that is.
Tripp explicitly doesn't want to call attention to it and wants to make it on how own merits and not be known as X's grandkid.And BTW, I don't recall them even being called the Howling Commandos in the movie, so why did he even say than, instead of "My Grandpa fought with Cap."?