Unfortunately corporations will be corporations and these things will always happen, once LMG stopped being Linus media group it became your usually shitty corporation focused purely on profit (while that was the point from the beginning at least then it was for the purpose of getting higher quality content and actually paying Luke)
That's its estimated worth according to one potential buyer It's not their total capital value, revenue, or profit value per year Though they likely have the liquid capital coming into hire a few more while they build out the lab The lab is going to be a money pit for a few years till they hit their ROI The issue is that the rate of growth requires a certain amount of liquid capital to spend that is dependent on pumping out videos across their YT channels They seem to need to slow their roll a bit on that growth