My (apparently unpopular) point is that non-participation affords no solace.

It isn't non participation though. You can participate in politics (local, state or federal) without consuming the 24/7 news cycle. The "news" is usually pushing doom gloom and fear no matter which side of the spectrum you are on because that gets the clicks. Rarely do political issues have meaningful developments everyday so continually checking not actually enhancing your ability to participate.

Fair point. My response is quite binary when there is a full spectrum of engagement possibility.

If you’re upset about the system or the options, your other option is to vote a write-in. This sends a stronger message in my opinion: we call such votes “protest votes”, whereas not voting all all leaves the situation a bit more ambiguous to the rest of us.

Many jurisdictions will ignore "write-ins" and they will not be reported.