Yeah, so it's not something to turn your nose up at, but it's not an accelerating trend. It's a persisent problem on a relatively small scale. Portraying it that way is what leads people to "the world is going to shit and I wouldn't want to be here in 50 years", which can have very destructive consequences, so it's worth contrasting that portrayal against the facts. On the whole, on this wider issue, things are not getting worse. That doesn't mean they're at an acceptable level nor does it mean they won't blow up again, but the overarching narrative is not so bleak.
I'm from a country that produced and suffered some of the most destructive acts of terrorism against political and religious "others" in the 70s. The only word for chopping off someone's head is barbaric, but that word also perfectly describes the damage done by DIY bombs. It escalated to a crazy level and seemed like an intractable problem, but it did reach a peak, and things did get better. Acts of barbarism still exist on the same ideological grounds but to a much lesser degree. So it is worth recognising when these things peak, and what direction they are actually going in. Otherwise the very act of discussing it as a "war" that is "bubbling up" can indirectly contribute to that problem becoming worse.