Is this a death threat?
This is a "light" threat and can be easily interpreted. I find this a very good explanation:
It certainly is not polite, but not a death threat. Don't want to take sides but this is a seldom used curse phrase in Romanian.
The problem is that @andulolika has an older and clearer death threat "
i would slit his throat for this if i could" and he kinda got away with it (it has "only" some negative trust for it). So while I would not take serious his "death threats", he should watch his tongue because sooner or later this way of talking will cause him trouble. (Of course, I mean anything that can be considered death threat, not the "usual" cursing).
So yeah, reporting is fine, the mods' "job" is to decide.
On the other hand, I also feel like OP makes a bit too much fuzz about this.

if this is not the first time he made this kind of threat and whether the threat is actually legitimate or not I am surprised he isn't permabanned yet seeing that he hasn't changed a bit after getting temporarily banned before for the same reason.
I think so too but let's put into consideration that different people have different response to a violent threat. GazetaBitcoin is probably one of those people that doesn't take death threats lightly.