The new threshold starting in 2022 is still $600 in gross sales on any online selling platform, or any type of 3rd party payment processor. So if you already sold $600 or more online, you are getting a 1099-k in January/February 2023.
The IRS is also hiring more auditors, so if people in the past have not reported their online sales, getting that 1099-k for the 1st time, could trigger an audit. The best thing to do is not get a 1099-k.