User blog comment:AustinDR/Not a Loud (My Prediction)/@comment-28517097-20170814135432/@comment-26901681-20170814153147

Lincoln is different from the rest of his family for a number of reasons, but just because he's different, doesn't exactly mean that he's adopted.

Lincoln doesn't need a talent at the age of 11. Luna found her passion at around the age of thirteen. He's got plenty of time to find out what exactly he is good at.

There is no evidence that Lincoln is who Leni forgot in Linc or Swim. She could have forgotten to count herself for all we know.

Rita's mistake of saying 10 kids could have been just that; a mistake. She could have been forgetting any of the children as there is no evidence that she forgot about Lincoln in specific.

They kicked Lincoln out of the house in No Such Luck because of the plot of the episode. He claimed that he was bad luck, so they didn't want his bad luck spreading towards them (which is dumb, don't get me wrong). Kicking him out doesn't support whether he is adopted or not if you ask me.

He understood hand-me-downs before. He just didn't like getting such girly stuff all the time from his older sisters. Not knowing about the Sister Fight Protocol is something that I agree with. I'd think he would have known about that.

It is never stated that he doesn't know where he got the white hair from. He may know the reasoning behind it or maybe he believes that he got it from Pop-Pop.