yes it does. Lots of people accepted for teacher training now would not have been accepted 10 years ago, and lots of cheap teachers are retained, because schools can't afford to keep expensive, experienced teachers, and lots of people pass probation who would not have done so before.
That is not to knock the teachers who are standing in front of classes now though. If they are keen to try, and want to do their best, then it is better than closing and combining classes, or setting kids unsupervised cover work.
They people who suffer most from having a less able teacher in front of the class is the teacher themselves. I have every sympathy for everyone trying to help hold the education system together
The other thing that happens is very young and inexperienced teachers go for promotion, This is partly because the more experienced teachers don't want it, and often hand it back, so there is noone else to do it.
This results in youngsters with no discernment jumping on every passing fad as if it is something new and exciting, without understanding that for many of us, we will have seen that fad recycle through the system 3 or 4 times before, and fail every time.
So this leads to conflict between keen young managers, and older more experienced staff.
When I first went off sick, I was asked to attend the weekly training online - and I said no, just send me the power points. A few months later the deputy head said I might not be understanding them without her explanations. I told her not to worry, out of the 20 or so I had read through, there was nothing new there that I hadn't been taught before ( mostly taught, then untaught, then taught, then untaught - but I didn't say that!)
She was a bit upset about that - she had really felt everything she was presenting was new and fresh, and "researched".