Yes, Dio also wrote that the Judean "Jews" were all but exterminated by the Romans:
"Severus did not venture to attack his opponents in the open at any one point, in view of their numbers and their desperation, but by intercepting small groups, thanks to the number of his soldiers and his under-officers, and by depriving them of food and shutting them up, he was able, rather slowly, to be sure, but with comparatively little danger, to crush, exhaust and exterminate them. Very few of them in fact survived.
Fifty of their most important outposts and nine hundred and eighty-five of their most famous villages were razed to the ground. Five hundred and eighty thousand men were slain in the various raids and battles, and the number of those that perished by famine, disease and fire was past finding out. Thus nearly the whole of Judaea was made desolate, a result of which the people had had forewarning before the war. (Dio, 69.13-14.)