Deciding when to use 就像 vs 像是 vs 像 I may be mistaken, but if I use 就像 , 像是 or 像 in any of the sentences, they are pretty much the same. Is there a difference?

“他们说‘电视直播’时，就像我说‘报税’一样无可奈何

“They say ‘live TV’ the way I say ‘doing my taxes’ — with resignation,”

...夏洛特和阿萨认为所有的电视都更像是Netflix，而不是尼克儿童频道(Nickelodeon)：

...like many children, perceive all of television to be more Netflix than Nickelodeon

像夏洛特·纳尔逊这样的孩子，他们喜欢一醒来就打开任天堂Wii U(Nintendo Wii U)

Children like Charlotte Nelson — who likes to turn on the Nintendo Wii U

听起来像是年轻女性在和自己的朋友们聊天。

“Our goal was always to sound like how young women talk to their own friends,” she said.
in 就像, 就 means "just", so 就像 means just like and there is also 就像是.
So the real problem is to distinguish 像是 and 像.

As a native speaker, I think 像 can always substitute 像是 but 像是 can not always substitute 像. 

In your example, if I change it to 像是夏洛特·纳尔逊这样的孩子，他们喜欢一醒来就打开任天堂Wii U. Then it sounds weird.

Or 这孩子长得像你。 This kid looks like you.

will sound weird if you say: 这孩子长得像是你.

To be honest, it's hard to tell the difference even as a native speaker. So I suggest you to use 像 always. It won't make mistake at least.