Extension has been working very well, considering Youtube keep making changes. One concern: the extension is causing a constant download of around 50KB/s whenever I am on the Youtube subscriptions page (seen on network monitor graphs) -- this stops when I disable the extension or go to any other page on Youtube. This is concerning -- what is downloading?
EDIT: confirmed the developer response, thank you!

Recent updates completely ruin the usability of this extension for me. It's impossible to hide "relevant" and "shorts," and if you enable shorts, they're not organized in a single line, but in a list, like a full-length video. I rolled back to version 1.502, when everything was more or less fine.

Something with YouTube changed again, now every thumbnail fills the entire width and the sliders don't do anything anymore.

No idea how to reply to a developer reply, so I'll edit instead:

A refresh did not fix this, nor did a wipe of cache and cookies.
After uninstalling and re-installing the extension, it works again.

Currently a bug with the new "most relevant" shelf youtube added to the layout. All the thumbnails and text in that shelf are extremely tiny and overlapping with each other.

Edit 7/3/26. Shorts has reappeared just to let you know.