I agree with you.
If you start suspending people for this, there will be no end to the second-guessing.
I don’t want that. It will change the game, and that shouldn’t happen.
The league has been allowing this kind of violence to escalate for about twenty years. An umpire has always been allowed to eject a pitcher -- even without a warning -- if he feels there was a deliberate attempt to injure another player, and a hard slide into second used to require you to make an in-slide to the bag. Just as is the case with a plonk, the question of whether the hard slide occurred in an attempt to reach the bag or was deliberately done is a judgment call and always has been. The ump could -- and should -- have immediately asked for a crew chief video review, and after the review should have awarded a double play. That is AND ALWAYS HAS BEEN WITHIN THE AUTHORITY OF THE UMPIRE TO DO WHEN HE FEELS A HARD SLIDE IS DELIBERATE AND ILLEGAL.
FReepers claiming they know baseball who think that a hard slide with no attempt to reach base safely "has always been part of the game" are completely full of it.