Very unprofessional and please look elsewhere or read their Glassdoor employee reviews to get an idea of what they are like.
I had travel to their office for 2 hours during the pandemic for them to look at me, talk for 20 mins and tell me they are looking for someone else, point blank. I don't know why they couldn't do that over Zoom. They had 2 other candidates they had interviewed so they had already made up their mind by the time they saw me.
They told the recruiter, they didn't believe my Github profile had code written by me. Also, I don't know basic stuff, I don't know what I am talking about and I am all "hot air". Yes this literally was interview feedback.
Around this time, they market was quite bad, with more job seekers than there were jobs, so they could do that.