I don't think Lando/not-Magni streaming but Randon/not-Vesper not streaming means anything in the grand scheme of things. Lando's a normal face-cam streamer while Randon was always a vtuber, and it's likely their non-compete specifically restricts vtubing activities. All the known not-Holo streamers who stream on other accounts don't use a model, with the only exception to my knowledge being Kson - which was a long time ago, and it's always possible she specifically negotiated that exception. Randon doesn't seem to be the type to want to do more personal streams without a character to stand behind, so it's probably less that he doesn't want to stream right now and more that he can't.