So you can’t even build your own DIY drone?
You can because unless you rock the boat you're unlikely to be charged. But according to the FCC original statement, https://docs.fcc.gov/public/attachments/DOC-416839A1.pdf
... the import of any foreign made drone parts is also blocked. This includes things like ESCs and flight controllers. Not just items that actually transmit radio signals like camera modules and so are traditionally regulated by the FCC re: import.
The best coverage of the FCCs over-reach attempting to regulate all parts, and then their subsequent very tiny walking of it back is Joshua Bardwell's video: https://youtu.be/Dyr87--SDuc (9m47s)
Almost all the new exceptions are for government users. The only thing relevant to human persons is the back-stepping change that as long as the components of a drone are 60% made in the USA the entire thing can be considered domestic and imported. Or US retail importers can take the risk of saying that a tx'ing camera module has alternate uses, like as a security camera, and try importing it regardless of the ban.
"FCC Updates Covered List to Exempt Certain Drones and Releases FAQs" https://www.fcc.gov/document/fcc-updates-covered-list-exempt...
Sure you can. DJI is banned though.