Back in the '80's, I did motorcycle collision repair professionally in California. I straightened quite a few bent forks, using a hydraulic press. We would straighten the triple clamps along with the fork tubes.
First, if the bend was severe, there is likely a crease in the fork tube along the lower edge of the lower triple clamp. We would turn the fork tube 90' (so the crease faced to the left or right) and slide the tube up to put the crease inside the clamp.
Next, if the tubes were still unacceptably bent, the front suspension would not move over it's entire travel without binding or sticking. So if it doesn't bind or stick, it's probably good.
I didn't straightened the brake discs, that was done by another tech. Disc runout should be measured with a dial indicator and should be within factory specs. If not within specs, or if the surface of the disk is damaged, it should be replaced.
In the time I did this work, we never had a fork tube come back. However, I think in the end whether or not you replace it depends on your budget. This was an acceptable repair in the US in the Eighties, but probably would not be now. It is apparently an acceptable repair where ever you are. But if a straight pair of used fork tubes become available at a price that will not unduly burden you, I see no reason NOT to replace them.