Lots of amateur players live in a fantasyland. They convince themselves that they can have a backhand like Rosskopf or Kreanga etc.
This is the biggest problem with amateurs who use spinverted on their backhand.
So what are the problems then , with using spinverted on the backhand ?
If you cannot loop like mad spinverted is a huge liability on either side. Why ? Because what else is the spinverted good for ? The problem is that since spinverted is the rubber used by majority of players , almost everyone also knows how to play against spinverted better than other type rubbers.
If you still a young player still developing your game, yes, you should definitely use only smooth rubber both sides. But if you are an amateur player getting older, you reach a saturation point of your consistency of your ability to execute various strokes using spinverted rubbers. This is lot more likely on the backhand for most amateurs, but yet most are in denial & force the issue.
Technique is of course critically important but technique means absolutely nothing if you are using the wrong rubber type for your playing style (not your pro idol;s playing style that you emulate) your backhand or forehand to start with . There is this idiotic belief among a lot of people even pros & coaches, that you can play with any type rubber or blade if you are good enough. This is pure nonsense. Yes you can play your best possible using a specific type rubber (usually sinverted) but you probbaly can much better say on your backhand using a blocking long pip or a chopping long pip if that is your better style.
This happens more also because every clueless wannabe coach keeps telling the player that they should work on their "technique" or footwork etc. For a pro player, yes this makes sense. But for an amateur player, such advice is usually nonsense for the backhand.
If you are an amateur player, if your backhand sucks using spinverted rubbers, you must identify your reaching your skill saturation point as early as possible & move on high aspect ratio super long pips as early as possible.
Yes spinverted is the best all around rubber in table tennis. And yes it is the best rubber for forehand for most players (except the most talented table tennis players who can use short pips on forehand or older players who never learned to loop in their youth or have some physical limitations and these players should also only use short pips on forehand ( high aspect ratio super long pips OX on backhand) ).
However backhand is a different story . If your backhand sucks using spinverted rubbers stop being in denial & living in a fantasy. It is time to switch to high aspect ratio super long pips as early as possible in your life.
But of course if you are not playing to be your best but are worried about robotNazi harassment, then go ahead continue using spinverted on your backhand in the social mode (not functional mode)