ELI5 - Weapon Set Skill Points
I'm very new to this game, especially in the context of how many hours invested seem to mean being "experienced" with POE, however I cannot for the life of me wrap my head around the concept of the Weapon Set Skill Points.
For reference, I started playing the game about 2-3 weeks ago, I'm playing on console, and I've yet to make it through the campaign all the way.
(I'm playing HCSSF [yes I know that may be crazy, but it's the main thing that drew me in and i'm having a blast] and have gotten to act 4 two times now before getting yeeted*. First time was entirely my fault for going blind into a fight with a guy named Yama the White, I should've known better, the second I saw his name show up with a health bar I started hearing Elden Ring boss music. Second time was because I didn't realize Benedictus was the pinnacle boss and similarly got wrecked due to not being prepared for the mechanics.)*
Now, in theory, I can grasp and understand the concept for wanting to bifurcate your talents to allow certain weapon sets/skills assigned to those specific weapon sets to benefit from certain passive skills.
But in practice, I'm struggling to understand when a skill point could be "detrimental" or even "harmful" to another ability/weapon set.
It's distinctly possible that this is stemming from me not having tried too many classes yet and not being familiar enough with the rest of the tree right now, but at the same time, I'm seeing references to utilizing the weapon set skill points for a few builds I'm trying out, but can't figure out why they're being used.
I don't know anything about these players, so please don't flame me or them for not knowing if these are reliable or even "good" build guides, but here's two examples I've found that pertain to builds I'm trying out as I go through the campaign:
In Example 1, everything about setting apart frag and perm makes sense to allow for a smoother gameplay loop of loading and firing the different rounds makes sense, but what's the reason for using the separate weapon skill points? In what scenario would you not want both skills to equally benefit from the +2h damage bonuses or the + increase immobilization build up?
Furthermore, they also note that "!!! Artillery ballista must be on Weapon Set II !!!" But again why? Why wouldn't you want this to receive the other skill benefits?
In Example 2, they've similarily used the weapon set skill points to assign certain skills to be only certain weapon sets in a way that on the surface makes more sense, + grenade damage goes to the grenade skills only, + totem damage goes to the totem skills only, etc. But again, I'm really confused as to why this is helpful.
Wouldn't it be the same to just have all these skills points just be for everything?
I've tried going through some guides on this and looking up youtube videos, but as is the case with many games these days (longtime fromsoftware and MH player here), until you get to know who the good and reliable sources of information, it's exhausting going through all the clickbaity "ABSOLUTE BEST BUILD EVER DO 1 ZILLION DAMAGE" stuff that's out there.
I'm clearly missing something probably very obvious, but would really appreciate some insight and/or examples, and thanks a lot if you read this full essay! I'm having more fun with this game than I have from a new game in a very long time, and am really loving how in depth the systems are, and am very interested to learn as much as I can!
