Yeah, it will help and it won’t. If you’re uploading through a typical cable internet connection, WiFi will almost never be the bottleneck. But if you’re streaming 4k in a part of your house that doesn’t have good coverage while other people use the same connection, it could make a difference.

I do a lot of streaming from my desktop to my TVs and I occasionally have bandwidth problems, so this could help that. And I have 300 up / 300 down fiber Internet, and in parts of my house I have problems getting anywhere close to that on WiFi. So WiFi 7 might help with those cases even if in the end your ISP is usually the bottleneck.