Invidious (and YouTube) supports appending &autoplay=1
to a video URL so it's played as soon as the web page loads.
For example https://invidio.us/watch?v=aqz-KE-bpKQ&autoplay=1
Privacy Redirect implements this as an option.
Also, the Invidious button/link should not strip this parameter (as seen here for example).
Fair enough.
Done in 8292c8d, thank you.