Pyonmaku for clips is now a thing too... I guess... Though I kinda doubt anyone but me will use it and it's not really suitable for all clips anyway, but it is technically possible now.
It looks for tags like this !Pyonmaku(ZLSgnA:ZLShog) in the video description (which is just a couple of base64 encoded timestamps inside the parentheses to tell it where to look for posts) I made a quick python script
https://files.catbox.moe/sxuz7m.py that generates those at the same time it cuts out the desired part (can install the needed dependencies with pip install ffmpeg-python yt-dlp )
