Anecdotally, but talking to a lot of people who really have their ears to the ground, the junior roles thing seems to be very real. It probably isn't just AI--with more senior folks probably more available, why hire juniors--but seems to be pretty pronounced (with probably the corollary that bootcamps are probably a bad idea these days). Which isn't a great trend if real.
Both things can be true. It can be tough for juniors and tough for seniors who haven’t kept up and are just trying to cruise. Not that age discrimination isn’t a thing.