It's definitely beneficial to interact with and include your toddlers as much as you possibly can, even if they aren't contributing much. It will accelerate their motor skills and help their speech to explode before many of their peers. My wife and I can often tell when children aren't interacted with by their parents, either through lack of communication or by being raised by a fucking tablet instead. There are exceptions to this of course (like autism), but it's very sad to see how many children between the ages of 2 and 5 are trailing so far behind the others due to uninvolved and disengaged parents.

My daughter has a lot of kids in her pre-school that are the same age as her, and they have an extemely simple and broken vocabulary. Their parents come to pick them up and don't engage with them whatsoever. Just quietly stick them in a car and usually hand them a device.

I suppose that's the unfortunate different between people who wanted kid and people who simply had kids.