How many languages do you speak?

I speak 3 confidently, on the path to 5. If the intent is to simply glean information from a native speaker, I'm currently at 7.

It is difficult to learn a second language

It isn't. Americans and some anglophones think that's the case because they're lazy and look for excuses.

some don’t and there’s an argument that kids shouldn’t be forced to as learning two languages at once can delay their primary language.

That's complete bullshit. You do know that kids in most of the world grow up learning between 2 and 3 languages in school and that doesn't impair their native language at all, right?