Agreed. You better have a damn good reason to stray from conventional wisdom. That said, SVB was way closer to conventional in his early career and then really leaned into that wavy stroke with a super brief follow through and an extreme preset in his wrist later on as he rose to #1 in the world. Mika Immonen came from snooker and had many centuries under his belt with a standard snooker piston stroke technique before abandoning it for his flowy Pinoy style which made him a killer and player of the decade in the 2010s.
Those techniques ARE better...and not just if you can practice 8hrs a day. SVB and Mika would not adopt those ways if they made them worse. More consistency and less susceptibility to breaking down under pressure.