Ken's smile is patient, and pure, and would absolutely melt Wormmon just into such goo if he were not already a bugge and therefore is likely already made of goo inside, what even are Digimon, hell if we know. "So are you."

And he's okay with sitting with that, for the moment, quietly. Just sitting and basking in friendship. Ken - this Ken - does a lot of sitting and basking.

He's found it preferable to pressure.