Plenty of great CAs here at UAL with no previous CA experience. Some I know are respected LCPs. Most are professional, mature, and have had years of right seat experience learning how good (and not so good) CAs operate. European carriers have 25 year old yoga influencers Captaining 737s with no issues. Is flying in the US that much more demanding that in Europe?

Yes the ironic thing is the senior WB FO bitching about low experience CAs but won't move his ass from the right seat to the left seat and bring all that experience with him.

I'll take a fresh CA with a humble good attitude over a 5K PIC hours cocky entitled complacent CA any day of the week.