I'd say it's ok to give them alittle, like what you'd add while cooking. Just go easy on it, which would actually be better for the whole family. If your buying jarred baby food, I'd buy the kind with less salt or no salt. But once they are old enough to eat table food, I would give it to them the way your family usually eats it.
I season foods like normal, and like I would eat them when I give Lydia table food. Babies like variety after a while of eating mushy blandness, I'm sure. And Lydia is almost 10 months old and loves spicy things! But my great-aunt is Korean and I saw her give her grandkids spicy foods, and they were fine. No spicy for us yet, but Lydia loves the salsa at Mexican restaurants!
All food has a natural fantastic flavor that gets disrupted by salts. You will teach your child to enjoy the natural flavor of whole foods if you do not add salt, a healthier choice. If you add salt he will learn to expect it, a life long habit that can be deadly. Salt is unnecessary, and I would purchase food without it as well.