Yes? No? Maybe so?
The question is too general and there are ultimately a lot of factors that we can't take into account as we aren't the developers ourselves. It's not like any one Nintendo game is known for having a bad engine, so it's a strange question. Yoshi's Crafted World isn't even Nintendo, that's Good Feel, a third party developer that makes games for Nintendo. Snipper Clips was also made by a British developer, with Nintendo helping co-develop parts of the UI, menus and art. But most of the programming was done by the indie devs themselves.
I get the feeling that third party collaborations use third party engines when it makes sense, which is quite often.Last edited by AngryLittleAlchemist - on 23 June 2019