Translation: We don't really believe in your idea or you, but if you get a big player to put some money in we'll be happy to follow them.
If they're willing to invest a small amount of money it means they think it's interesting and they'd like to basically 'bookmark' it by putting up a small amount of capital in order to receive your company updates and have a small piece of the upside if things go well, but they don't have enough understanding of the product or conviction that it will work to drop everything and make a huge investment in it. And I don't think that's a bad thing at all.
E.g. there are a lot of folks who own a few hundred bucks worth of Bitcoin, so is it wrong that they haven't yet invested a large portion of their net worth into blockchain/crypto? I don't think so, I think it just means they're dipping a toe in the water and trying to get a feel for what's going on.
"We'd be in for 300k if you can find someone who leads at 500k," or something like that.