You have to consider who is giving you the info. From my work with neurotypes I came to the conclusion that different neurotypes respond to different training approaches.
Type 1A get bigger by getting stronger and they lift heavy by using high tension
Type 1B get bigger by getting strong and they lift heavy trying to accelerate it
Type 2A everything works, but nothing works for long
Type 2B get stronger by becoming bigger
Type 3 get bigger and stronger by mastering technique and feeling in control
So if a coach/expert is a 1A or 1B he will naturally recommend trying to move more and more weight if you want to get bigger because anecdotally he has found that this what works for him
A 2A expert (like me) will be the expert who recommends various approaches, seemingly contradicting himself. In reality it is because everything try will work to some extent but it stops working fast.
A 2B expert will recommend more about feeling the muscle, going to failure (or beyond it) and that the pump is important, focus on the feeling not the load, etc.
A Type 3 expert will normally be the one who talks more about technique, will recommend programs based on few lifts that you stick with for a long time, etc.
Everything can work provided that you train hard. There is no “best” loading scheme or method. It really depends on your neurotype.