[zeograd]

In the spirit of FOSS, he also publishes his video on peertube: https://peertube.touhoppai.moe/a/shichimi/video-channels

Disclaimer: I manage this Peertube instance and used to mirror, with his agreement, those channels as mirrors, and he's now managing them directly.

[orbisvicis]

Correct me if I'm wrong, but if I was on a different peertube instance, there'd be no way to discover his videos aside from word-of-mouth? As in, peertube has no global search, right?

[pseudoramble]

There is offering from the creators of Peertube I believe: https://sepiasearch.org/. I think instances have to be added manually into the index, and tbh I don't use it much and so I'm not sure of the quality. But it sort of covers what you're asking for, at least kinda.

[zeograd]

Discoverability is indeed lacking in Peertube, as for global search, what looks the most like it is https://sepiasearch.org/