FWIW: everyone has asked for hiding individual streaming channels. There's some older threads about it. Roku hasn't responded other than "I'll pass it along."
It's been theorized that the channels come from Pluto, and the carriage terms prohibit Roku from hiding any. But, my Amazon Firestick Lite has Pluto. That app has the feature to hide channels, and maintain a list of "favorites" (something Roku removed from antenna tv, and everyone's complained about, and Roku's ignoring that too.).
My theory: Antenna TV watchers are dead weight to Roku. Roku doesn't get any revenue sharing. No "buying" opportunities. (Roku gets our viewing habits to sell as "big data." But, that's all.). I think 1000+ channels were added, and favorites removed, and continuous channel changing disabled because: we'll have to land on some hundred channels briefly, causing Roku to get a penny. An "impressionable visit" (like click bait). We're just mules who generate revenue for Roku. Not customers. We work for Roku, not the other way around. We're the product being sold to advertisers, content providers. We didn't just buy a tv.
OTOH: you can navigate more quickly in the guide (compared to one up/down button press to change one channel at a time). And, to your point: You can also use the << & >> keys to scroll the guide one page at a time (continuously). That might be easier to use.
"People are often amazed at how much we’ve done with the number of engineers we’ve got." (Roku CEO Anthony Wood, Austin Statesman, Oct 4, 2019). "Amazed" is one way of putting it.
