He knows Dabi's not telling him everything. There's a reason he went to Deku for some answers... but he's not going to tell Dabi that. And he really does need to talk to the young boy again... if only to get a little more information.

"That's true. And I will. Who knows? Maybe that's how your powers work here, too. We did come out as squids after all. Who knows what they've done to us?"