I'm another who never squeegees. I haven't had problems with drying marks (possibly because I use a wetting agent and have a final rinse in purified water) and I can see the potential for s ratching from a squeegee.
Possibly this is another of the "to UV or not to UV" questions as applied to lens protection.
I found the bit about improper fixing quite interesting. However I'm not sure I'd be able to tell the effect ('milky negative') apart from say, an underdeveloped or underexposed negative. It seems to me the poorly fixed example has no real blacks and no real whites. Any further suggestions on how to spot this mistake from the negative?