To close down your first question, try rereading...Okay, but do you have anything substantive to add to the discussion besides complaining about people who are better at the game than you?
A common issue I see among Axis infantry divisions is overspecialized units that aren't strong enough in their specialized role to compete with the masses of Allied generalist units. A lot of these divisions rely on a min/maxing play style, where you screen for your specialist units with cheaper ones. For example, screening for self-propelled guns with captured French tanks or for Panzergrenadiers with 10-15pt disheartened troops. Unfortunately what often ends up happening in practice is that the combined strength of a lot of Allied units that are decent at more than one thing wipe through the fodder units and then kill off the specialist units (or worse, get the jump on the specialist units and then freely slaughter the fodder units — such a mistake is punished much less for the Allies).
This is especially evident in the wealth of 1v1 tournament replays we have for review thanks to shoutcasters, where these divisions don't have an ally to help cover their weaknesses and consequently are seen less frequently except for by players with a particular affinity for them. The poster child of this problem of course is the overpriced Jagdpanther that soaks up too many points to fight an equivalent point value of Allied combined arms, but it exists across all phases in most of these divisions.
I'm curious to see what the forum thinks of the 17. SS-Panzergrenadiers, the Axis infantry division absent from the discussion thus far. I suspect it's not a coincidence as I happen to think they're the strongest one of the lot, having access to versatile infantry with the combination of affordable(!) PzGrens/Stosstrupp, significantly better armor than most in the form of the elite Stug III and abundant Stug IVs, and an all-around strong AT selection.
"When you experiment with these weak divs you mention, you get mashed up but it's these divs that can be interesting to try and get a tune out of"
More often than not you will lose with these divs. It's why playing with these divs is not always enjoyable because you will come up fave divs used by people who only way to win or rank higher. I actually quite like the idea of playing completely random divs and seeing what cones from it.
Regarding the 17th, I haven't played them for a while but remember their units as expensive and it's hard to cover a full front. I might be wrong. I know in good hands you will be up against continually rocket spewing art.