Almost every hobbyist reverse engineer uses cracked IDA which is easily available. I have never seen ghidra being recommended for serious work.
And everyone uses Ghidra exclusively where I work. I'd say we're a serious operation
I recommend it for serious work. Well, serious enough that I got paid for doing it, and/or given talks about it.
(not if you're only doing x86/ARM stuff, though)
This is changing, Ghidra is increasingly replacing IDA for commercial work.