It does, because it's essentially the same thing as old school cable TV. You're getting access to ABC, CBS, PBS, NBC, Fox, FX, CNN, TNT, EPSN, BBC America, Food Network, HGTV, and so on. There's not really any service that offers (all of) that content without commercials.

You can use their cloud DVR to "record" something, and after that happens, you can fast forward through the commercials. Which is similar to what you would get with a old school cable and a real DVR.

I also hate commercials, and while you can find commercial free versions of some of the YouTube TV content, you can't find it for everything they air.

Streaming is so fragmented now, both in content and features, that you have to do quite a lot of research before buying.

Edit: The text of the email Roku is sending out: https://pastebin.com/C3cEE3qq