My tips for consuming "boring" tech talks is just to listen it, without watching the video. You can do some attention-light tasks like housekeeping or exercise while listening.
The problem of the boring tech talks is that they demands a lot of attention (visual) but doesn't return enough stimulation. Your mind starts wandering without the enough stimulation/entertainment. So just give them less attention.
Not all the tech talks are good speaker, and not all tech topics are good fit for an entertainment. I'm fine to accept that fact and adjust how to consume them.
That's said, I hope there are more audio-focused tech presentations out there. If you know any good series or something, please let me know.