VC is a long-term business, with the average time from founding to IPO ranging from 8-10 years depending on the year. If you look closer at this list, you'll see companies about to IPO (Amplitude, Relativity Space, Embark Trucks) and several multi-billion dollar exits (e.g Segment <> Twilio, Twitch <> Amazon).
Lastly, the business is all about power law, so these small exits outperform the remaining portfolio by orders of magnitude. I bet they are beyond excited with their returns.