Eg growing from 3 stores to 22 in two years probably requires a lot of big upfront expenditures.
It's important to look at cashflow statements, P&L, and balance sheet in concert rather than isolation -- especially for larger fast-growing companies.
They're spending a lot on operating stores and advertising, where the input-output math is less clear/predictable. You could also believe that those stores stores will scale up in efficiency as people know that they're there and leave their house post-COVID.
In the case of startups like this, the loss is often due to the large costs of things like expanding number of stores, expanding manufacturing capacity (it's not always as simple as sending orders to China to make), expanding their logistics system to handle shipping more and more shoes, etc.
It's a VC money, and the VCs will let this go on as long as an exit is in sight because they can then extract their money + a hefty premium.
Then at that point the money faucet is re-plumbed to the public's money via institutional investors and from there they're free to do the slow decline to penny stock at their own pace