If by bad you mean “zero nutrition”, then yes. This is not to say hydroponics isn’t nor can’t be used to supercharge vegetables nutritionally, albeit artificially, but that’s not what happens in large scale production. The Netherlands supplies many European supermarkets with most of their vegetables but the quality and nutritional value is famously next to non-existent compared with what soil and sun can produce, alas at much less quantities. Tasteless, water heavy, mineral deficient facsimiles at best.

Awesome for growing mindbending unnaturally high THC superweeds concocted by deviant botanists, though, if that’s still your thing.