Ok, let me revise my point from YINI doesn't give an advantage to YINI doesn't give a significant enough advantage to make it cut and dry.
So placement experience can count towards chartership, that's all good but it's rarely going to provide the same time value as the graduate program and the large majority of people don't achieve chartership in the minimum time, it often takes an extra few years and it's not uncommon to see people becoming chartered after ~10 years of experience, at which point 1 year is starting to become negligible.
Most universities will also expose their students to a long term pseudo-industrial project environment which provides a solid introduction to the kind of skill/knowledge advantages for YINI being brought up, you won't be as fluent but you'll have a decent idea.
You guys are providing good arguments for the YINI but none of us have the evidence to backup whether it provides a tangible, statistical advantage when it comes to employment later down the line. It's important to remember that you can spend years of your life on something only for it to get you nowhere or provide nothing, YINIs aren't an exception to that. I can't reasonably say a YINI is something you absolutely should try to do given the non-speculative evidence present.