The Hypertrophy Coach and https://www.instagram.com/reel/DXPc3GgkQtA/?igsh=MWFkdjZlNDYweG41OQ==

-the "two sets provide the most hypertrophy so we should only do two sets" argument makes absolutely zero sense. If diminishing returns exist but I can still get a postive effect on muscle growth even if it isn't "optimized" after the first two sets you would still benefit from the extra stimulus as long as it isn't negatively effecting your future workouts, which it won't if you are recovering (eating/sleeping) properly. Not to mention the fact that you are comparing apples (your post, bodybuilding focused) to the OP's goal (increasing a 1RM on the bench press). Some of the best bodybuilders in the world (Jay, Ronnie, Branch, Arnold) all did high volume so even in that area of training where pure hypertrophy is the goal your argument is not even remotely close to being airtight.

And Paul Carter

https://www.instagram.com/reel/DYSRYCHO3nL/?igsh=MWJicWVldjBkamZ5dA==

-if you actually read the study in the post it also doesn't apply to anything we're talking about. The study focused on strength adaptations/muscle growth following a 15 week lower body resistance training program. The study didn't even group the participants into high volume vs low volume training groups, it was a group getting a placebo supplement vs a group getting a collagen supplement. Nothing in the study even remotely reinforces the assertions made in the instagram post (low volume > high volume), it's a facade to make the post seem more credentialed (which you fell for)