I don't think I agree with the assessment that Bains is faster or stronger compared to last season, but I think that's maybe 25-50% of why he not a plus possession player and it has more to do with lack of experience in getting the right body position to come away with the puck (see: Garland).
Either way, his most common forward linemates are Pettersson and Miller, he has 1 goal in 8 games (from a Daniel Sprong chance), and I can't recall many times when he's "popped" offensively showcasing his skill because he's playing it too safe. While the hyperbole is a bit ridiculous, I don't really fault anyone for thinking he's not there yet.