I don't think that's true. Even if he were a cartoon, it could still be done believablyAs for Data's Love Life, would there even be any debate or discussion on the matter if he were a STAN WINSTON plastic robot, modelled off of Brent Spiner? Or a Box on Wheels? No. Not at all. He'd probably be assumed to attach sex toys to himself and that would be enough conjecture on the matter. BUT..........because he's played by a Human wearing face paint, now, ALL of these possibilities of what he might experience or be capable of become limitless and worthy of investigation. There are those who dismiss the fact that Data's portrayed by a Human actor in makeup as having anything to do with that, but I don't really buy it. Again, were he realised as a puppet, a lot of conjecture about Data would never eventuate, more than likely.
This really touches on the subject of touch. If you touch Data, does he sense that, and if in fact he does, which I figure is so, then what are the boundaries of that, and how is it represented in him? It's not a subject they delved into much, but I assume it's similar to his ability to taste or smell. Will he derive the nuanced personal connection that a human derives when they smell, taste or touch? Very unlikely, but he does have the ability to do those things. And is equipped for upgrade to the point where he'll become totally capable of that human connection, as I'm sure Lore actually is
Lore does not suffer from a diminishment of anything a Human has. (Lore's problem being that he has an overabundance of human things, physical prowess, intelligence, emotion, sensation, etc... the result being that it's made him maniacal) Data has had these things purposely diminished by way of removing the full emotional connection with them
However, since he CAN do them, then he has some kind of connection to them. He is interpreting them in some way perhaps unique to him