I think they mean "been around for 4 years before taking funding last July" which would equate to 5 years.
The current status quo is that a bank creates money out of thin air, which they can then profit off. This money they create _might_ represent value, but only after the loanee does some work for the debt. Therefore, all interest payment on such created money are essentially a "tax" the banks leeches off the people who did the real work.
"Gold is money. Everything else is credit". - J.P. Morgan
A simple example would be without money you barter which is also a manipulation of language expressed through physical items. You need this I need that so we exchange. With money the equation becomes you need something, and you can buy it with money, here is some money, now give me what I want. The intermediary form of this was gold, because people can agree that gold is reliable. We replace that with simple language backed up by force, a dollar. A piece of paper that initially will stand in for gold to establish its value, but eventually will stand in for itself. Eventually we replace this with something like Bitcoin, no coercion simply an agreement in language justified through a market.
Quid pro quo.
My guess: they're gearing up for an IPO. Maybe not for a couple years, but they see their market size as being big enough to go public, and they want a prominent financial backer in their corner when they do. That's the usual reason why profitable companies take investment. Microsoft famously eschewed all venture funding until a mezzanine round right before they went public, which was a.) so they could vet their investment bank and develop a relationship with them before it really mattered and b.) so said investment bank would have an incentive to hype up the stock and get the highest possible price at IPO time.