Tomato’s are very forgiving...
You can root the piece that you pinch off. Just put it in a glass with water. You actually can root the suckers if you are a sucker pincher.
You can try to tease the roots apart on a couple of plants and repot them just to see if they will thrive.
The broccoli is fairly hearty too. I’d try to split a couple of plants up and repot them just a little deeper than they were before.
I’ll try your method on some of them. Actually, I have more plants than I can use, so I dont know what I’m whining about. I’ve offered the extras to friends, and they are not interested. But there is something deep in my soul that says “Waste not, want not”, and I hate to throw away a perfectly good plant.
I had a neighbor who used to yell at me when I was planting petunias — “Pinch those back by half, and you won’t be sorry.” I’d always try to leave the blooms on, and she’d always catch me and yell at me again.