I'm sure that they have a lot of people trying to work toward profitability. But it's a big company. Lots of engineers. They still have a frontend team, and those folks gotta work on something.
"...folks gotta work on something" is exactly the attitude that unicorns with too much VC money take and end up tanking.
I don't know of any company, regardless of unicorn status, that fires their frontend team because their monetization team hasn't figured things out yet.
Investors are always focused on the rate of new subscriptions, if they can't be profitable they can at least say they are growing subscriptions in new markets and possibly save the share price
By making that platform more accessible to millions of potential users. Their main source of revenue are Ad's so anything to increase a user count would seem like a good direction to go in.
But when an advertiser looks at how many people they can reach that they're actually interested in, it doesn't matter if they have 10 million users somewhere else.