Eh... Let me play Devil's Advocate here:
Look at the full text of the studies they are citing... (link to the Big Study that forms the basis of these articles at the bottom) they all have the same bullshit problems present in virtually every phys-ex study: lack of confounder control.
The studies used the same programming in the gym (1RM measurement with untrained subjects ROFL!) but didn't track diet aside from admonishing the subjects to stay on their "normal diet" and do self reporting if they deviated (BWAHAHAHAHAHAHAHAHAHA!).
Further, tracking muscle cross-sectional growth without dietary and rest control is risible.
No rest cycle surveillance and no dietary surveillance plus a nonsense 1RM measurement model for the untrained (Novice's don't have true 1RMs) = useless fucking "data" from which are drawn useless fucking results.
These sorts of wildly bad "studies" are the subject of the annual/semi-annual review of study literature by the folks over at Starting Strength. Virtually all physical training/exercise studies are performed by people with ZERO understanding of training.
Full Text of the Hubal "study" as an example of the problem. Total waste of a decent sample size via nonsensical study design. It is shit and it proves nothing either way (other than the "revolutionary" re-discovery of the novice effect).
The other studies have similar holes or worse.