I'd re-phrase it as "diamonds CAN be too aggressive for 1095". But, for some tasks, that can be used to advantage.
Reason I bring this up, I just recently used a Fine DMT 'credit card' hone to very quickly thin & re-bevel a Case CV blade (very similar to 1095, in terms of how it sharpens up). It occurred to me, while doing this, that the Fine diamond handles this particular job very well. Very rarely is anything coarser than a Fine diamond hone needed, for this sort of task on a folder-sized 1095 blade. Coarse or Xtra-coarse diamond would almost always be overkill, unless doing a very thick/large/heavy blade.
Diamond isn't necessarily best for the refinement of a very fine 1095 edge, again because of it's aggressiveness. With very soft 1095 (lower RC) in particular, it's very easy to create and then fully erase a new burr in one pass. This sometimes makes it difficult to detect the burr, if one isn't watching very carefully and inspecting the edge on each and every stroke. If the burr formation is overlooked, one just keeps grinding away while still 'looking' for the burr to reveal itself (been there, done that). For refinement of 1095 and similar steels, I really like the medium/finer grits in SiC sandpaper, followed by stropping with green compound on leather. As one becomes more comfortable with using a Fine/EF diamond hone on 1095, it's even possible to go straight to stropping w/green compound and/or bare leather, after it's verified the burr has been formed on the diamond hone.
But, for hogging off steel very quickly, to thin the grind and/or knock down the shoulders of a thick edge grind, diamond is especially good when a smaller hone is used (a larger bench hone in AlOx or SiC could also do it quickly). This can be especially useful if a 1095 blade needs extensive repair in the field; just whip out a pocket diamond hone and get it done (quick).
David