Would liposuction be a suitable procedure for male buttocks reduction?

Liposuction of the buttock is fairly uncommon. When there is a substantial amount of fat liposuction regardless of the technique can make the skin look ptotic.

Dear, liposuction can be performed in many areas, but you have to be careful with liposuction in the buttock area, because your surgeon have to be cappable of doing also a liposculture to giving the buttocks a natural appearance. 

If there is fat and this is causing the large size then yes buttock reduction can be done with liposuction but it needs to be meticulous, through small cannulas, and would be best using VASER to get skin tightening and reshaping of the area properly after surgery.  You want to maintain the male look of the buttock which is more square, has a depression on the lateral aspect, and is more projected medially (middle) as opposed to females which are more round, have hip projection without dimple and are larger laterally.  I suggest only going to an buttock specialist, I do a significant number of male buttock surgeries each week.  Best, Dr. Emer.