Oh absolutely. People got used to YouTube featuring and fitting alt-right or conspiracy garbage around your channel in every possible spot, but I feel it is not exactly a great model to adopt. If anything it should be opt-in or certainly disabled if you host someone or prefer something else (like playing your VODs), which I hope it is. Twitch is currently planning a roll out of several things, so this is likely one of them. Still obviously petty to test it on Ninja first with him having no control over it, even if it makes business senseOk, but that feature is just ripe for abuse as today illustrated.
The way Mixer does it is just plays your past broadcasts when you're offline. Twitch allows you to stream other channels YOU decide on when you're offline.
But leaving it up to an algorithm is absolutely stupid and just a target for trolling.