First round was fine. Second round had two people who were unknowing of what they were asking. The man who asked frontend questions did not know what web workers were; claimed that TailwindCSS was a premiumware (it isn't btw); and claimed knowledge of virtual DOM when he didn't understand it at all.
The other person interviewing behaved unprofessionally by questioning my educational credentials and asking vague system design questions, refusing to be proactive, sounding more like an interrogation,
In the end, this simply looks like a data farming mechanism and less of actual hire.