Movist Pro has added shortcuts for deleting videos right from the app. From the 2.13.1 changelog:

2.13.1

• Added file deletion feature
    • [File > Move to Trash ⌘⌫]
    • [File > Delete Immediately ⌘⌥⌫]
• Fixed crash issue on macOS Tahoe beta

I don’t know about the rest of you, but Google finally succeeded in killing my uBlock Origin’s capability of filtering out YouTube ads a few weeks ago. I’m test driving Brave as my main browser right now which seems to do a good job of ad filtering, but an equally good or better option is to use yt-dlp to fetch videos, then watch them in Movist. No ads, and with the benefits of a desktop app like fast scrubbing, offline use, and pinned windows.

This feature makes that workflow a little smoother. Download video → watch in Movist → finish watching → delete video directly without leaving Movist.