But I'm not talking about those, I'm talking about one specific currently airing show. Though even if you outsource to Japan, it still depends who does the animation direction and storyboards.
(And coloring. I feel like it's easy to spot American attempts in particular because all the colors are too contrasty and oversaturated, and then they put glowy neon effects on top.)
Note, fake anime in other Asian countries is getting really good these days, and in fact is starting to take over Japan because other countries don't use the Japanese industry strategy of "never change anything and never try to make any money". Was just there and all the ads were for Blue Archive/Azur Lane/Honkai, which are Korean and Chinese.