Counterpoint - unstaged flippers (Example: Congo’s 2 left flippers) make it physically impossible to cradle on the lower and use the upper. This is a technique used in many competitive settings on games that have staged flippers.

People need to set up their games properly. Just because an OP may have a game set up poorly, doesn’t mean an industry should take away something that adds to competitive gameplay.

Edit - multiple flipper buttons are also confusing, unless it’s blatantly obvious it has another function (MagnaSave on BK/BK2K, center post kickback on Medusa…etc).

In one picture I have the flipper button fully pressed in. Both left flippers are up. But there’s two switches in series and the upper flipper is 2nd in line, so if I depress the flipper button a bit, the upper flipper returns to rest. So by depressing and pressing just a little all the way in, I have full control of that flipper while not moving the lower flipper (which is cradling a ball, typically in a multi ball so I don’t drain).

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It's crucial, especially in games where an upper flipper hits the Super Jackpot or other key shot. Take TMNT for example where Mondo Jackpot is reached from the Krang loop. You can flail around with all the balls in play during MB, but when you get down to two, the smart play is to trap up one and play the other. If you can get one ball trapped on the lower left flipper, you now have full control of the right flipper and upper left flipper to try to make controlled attempts at Super Jackpot.

Now compare that to my earlier example (Congo) where Super Jackpot is still an upper flipper shot, BUT those flipper mechs only have 1 opto for both flippers to fire together, and you lose that ability that staged flippers offer. In that case, the play is to get both on the right flipper, quickly cradle separate, shoot GRAY, and quickly go for Super JP while you hope to maintain the other ball down below. If you have one on each flipper, you still use the right flipper to hit GRAY and then go for Super JP while knowing the other ball is going to get rifled off since you can't stage the left flippers so the lower ball is flipped when you attempt Super JP up top.