While I wouldn’t say it in those terms, there is a lot of truth to that.
While Khim is certainly able to articulate his point himself, let me give you my perception of that.
Shotguns and snipers are balanced for power around other flaws, so they are usually the type of weapons that are the hardest to manage but that net you the best DPS overall. I would even argue that apart from a few uniques, Shotguns are the only weapon type at the top and snipers are simple the only other type to be able to “keep up” with them.
You can see that when playing Salvador: Ammo is not an issue and neither is accuracy, so you defect to the most powerful weapon types, which means Launchers, Shotguns and Snipers. Ammo consumption is the great equalizer for gun types (more powerful = less ammo in the bank, usually)
Most of the best, most powerful guns in the game either use a scarce ammo type or consume more than one per shot to compensate (Harold anyone?) The best SMGs overall are PCs, and they use 2 per shot to compensate. The most powerful pistols (DPS-wise) have the binary accessory. The best Non-Unique ARs often have the Vladof Spin barrel, which is another way of saying “more ammo spent in the same time frame”. The Best Jakobs ARs (outside of the Bekah, which SHOULD consume more than one ammo per shot) are the Gatlings… they use 3 ammo per shot.
Shotguns do both: they use the 2nd smallest ammo pool AND they consume up to 4 per shot.
That being said
This is only from a Min-Max point of view: there are plenty of guns that are “powerful enough” to play at OP8 that are not shotguns or snipers, this is simply a point about what is the best choice out there when your priorities align with performance.
The Florentine is one such gun, albeith it is simply more obvious that it is not fully optimized than most other good choices out there, but the argument that people who don’t like the Florentine are generally making is the same argument that @khimerakiller is (appropriately) making about all SMGs or other non-DPS optimized gun types in general, except he is coming from an even more “focused” point of view, being a min/maxer.
Let’s put it this way: if Borderlands was competitive, there would be a LOT more shotguns and snipers used






