A good FI is a good FI whether they hold a PPL or CPL. My argument is that you have a generally higher standard of candidate with someone who has jumped through the hoops. They certainly have demonstrated a higher level of commitment.
I do think that the level of training in general is pretty poor throughout the industry, but I think the solution is to have full time long term FI's earning a respectable salary, rather than having an influx of "new" FI's.
To me it smacks of a cheap fix and that long term, the issue of salary is more important.
Market forces are pushing up salaries, having a load of PPL FI's will end up stopping this and maybe even reversing this trend.
The current system is not very good, but this isn't the way to fix it.