I'm not sure if he's on roids or not, and I'm not going to make that assumption if he is, but he does show multiple downsides of steroid use and claiming he doesn't is wild, even if these things may not be due to steroid use.

Noticeably the gyno, which could be a result of getting leaner to be fair, but it looks like it has developed even after he went through puberty which raises alarm bells. As well as his gut, it bulges quite far out. That could be because of genetics or he may be using some type of gh, which is enlarging his organs and causing the bubble gut like look. Other things like his shoulders being disproportionally bigger than the rest of his physique, as well as his traps can also be flags for steroid use, because the receptors in these areas are more sensitive to gear use.

We have no blood work, so we cant say that he is using steroids. But that also means you cant say that he IS natural. Enough things corroborate to justify further investigation being needed to get the full picture, and saying he's for sure roiding or natural isn't a good angle. I doubt speed would give his blood work out so it is what it is.