Samson committed suicide. I've not seen him condemned for it.
Would he be considered a kamikaze terrorist bomber today?
If that incident, stated the way you just started it, were sufficient to prove a principle, it would prove too much: that suicide is OK by God; and/or that, as you say,"kamikaze terrorist bombing" is OK by God.
But the idea that this incident in Judges proves a principle, is invalid.
That would mean we approve in principle of the burnt offering of children unto the Lord, because that's what Jephthah did in Judges 11, and without a word of disapproval from on high;
...and it would mean we approve of forcing one' daughters out the door to be violated by a mob of rapists ("I have two daughters which have not known man; let me, I pray you, bring them out unto you, and do ye to them as is good in your eyes");
...it would mean all that Biblical polygamy is fine of us, too, as well as slavery and genocide; in fact the entire catalog of OT lechery and butchery and jihad-level morality would be OK --- right?.
Somehow, this doesn't seem right.
Especially since God in His actual legislative Word repudiates such things repeatedly, e.g. He condemns "the shedding of innocent blood" as an abomination pret-near 20 times by my count.
So, no: Samson does not prove a general moral principle.
And especially since it was from the Book of Judges, which twice warns us that "men did what was right in their own eyes."
Remember that a lot of the point of the OT is to demonstrate just how desperately we need a Savior.
Which recalls the wise saying, "Well if you can't be a good example, you're just have to be a horrible warning."