AGold, Have you been chewing on the edge of your blade again????
This is what I would say: you have used that blade pretty hard. Don't worry about it. Keep using it. At a certain point you will know that the blade is done and you need a new one. Use it as long as you can and when you need a new one, get one.
When you get the new one, just try not to hit the table as much. Yes it happens every so often. It happens to everyone. But that looks like it is happening a bit more than it should. So you just have to be a bit more careful and figure out what you are doing when you slam the table.
Is it serves? Those aren't from pushes because on pushes you will hit the flat part of the table so you won't get gashes like that. It looks like you are hitting the sharp corner of the table. Do you know what you are doing when you slam it the worst and get the worst gashes?
If you can figure that out, then you negotiate things so that does not happen as much. Like, I used to do that on my serves, particularly my hook serve. I just changed the angle of my body a tiny bit and it usually does not happen any more.