(yes, this also works on mobile)
There's currently an issue where deeply-nested comment threads squish up against the box edge and become unreadable, as detailed in this bug report. This got me thinking about alternative designs until I came up with something I liked and decided to implement.
This script flattens replies down to one indent level and collapses them behind a click-through. If a reply isn't directly responding to the one above it, then a quote is embedded with a clickable link to the comment it's replying to.
If you have Tampermonkey, then click here to install this userscript. You can also view the source code here.
Small thing to note: this script automatically disables the reply button after 7 indent levels. This assures your replies can be read on any supported screen size without having to do stuff like turning the userscript off to check.
