Not at all. During my lifetime, the 1993 World Trade Center bombing, the Oklahoma City bombing, and the Unabomber's arrest were all prominent enough for me to remember when they happened. I still remember hearing my grandmother express concern about the Michigan Militia when she saw a belligerent guy wearing camo pants.
> all prominent enough for me to remember when they happened
I listed pre-9/11 examples of terrorism that I remember happening.
"In the past two decades, fewer than half of all terrorist attacks have been either claimed by their perpetrators or convincingly attributed by governments to specific terrorist groups."
https://www.economist.com/graphic-detail/2019/02/01/why-do-t... (http://archive.today/mL4OE)
What's your source for this? Events classified as "terrorist incidents" per year in the U.S. regularly exceeded 100 in the 1970s, but haven't exceeded 65 in 10 years ending 2017.¹
¹ https://en.wikipedia.org/wiki/Terrorism_in_the_United_States
Terrorism isn't a consistent ideological position. People don't openly advocate for terrorist states, terrorist literature and philosophy, terrorist thinkers and political party. There's no terrorist bookstore, but here in SF I can go down to Haight St and find an anarchist bookstore ...
On the other hand I think terrorist is an appropriate description for a Timothy McVeigh or a Kaczynski. I would state those as more violent than 20th century anarchists.
I think the first time most Americans heard much or cared about terrorism was 9/11. The word has -very- strong emotional attachment - hatred, fear, anger, sadness, etc. In the interest of not causing nationwide panic, I can understand why they're just calling it vandalism.
Others may say we -should- be panicking, and I can't necessarily disagree, only explaining one possible reason media is hesitant to use that word.