Does anyone have good boy cat stories?

I’m getting a kitten on Sunday. Right now I live with my boyfriend and a 2 year female cat. I’m getting the kitten because my cat is lonely and enjoys playing with other cats and I think she’d mother a kitten well.

I’m hoping to get a tiny kitten, 8 weeks old, for her. I’ve always been told that boy cats will mark their territory so my family has always avoided boy cats. These kittens will be neutered, if that helps. I live in an apartment, so I can’t handle getting a cat that will pee.

Can anyone convince me that it’s all rubbish and that boy cats can be trained to use the litter box reliably at a young age?