Yeah, toilets in American homes tend to rely on a siphon to evacuate the bowl so the outlet has to be narrower. Also, Bidets are not very common so most people [insufficiently] clean themselves with toilet paper which is prone to causing clogs.
Personally, I installed a bidet a few years ago and I would never go back to not having one.
You went to a country with incredibly poor-quality, high fibre ultra-processed food, coupled with medieval-level plumbing, then clogged a toilet and said -
I live in Europe, and somehow my toilet gets blocked every couple of months. Might have to just clean it properly with a spiral, but so far the plunger has always worked.
Just don't be too aggressive. There will be backsplash.
The figure is somewhere above 0%, but certainly not zero. For example, haven't you seen the crap blaster 9000 infomercial at 2AM on a Tuesday? You connect that bad boy to a fire hydrant (vendor liability disclaimed), pull the turbo-diesel engine rip cord, and wear a full body bio-hazard suit with air supply (suggested). Not for use with some sets. Batteries not included.
You only make this mistake once, hopefully. The first night I moved into my new place, many years ago was a bad night. My stuff didn't show up yet. It was getting delivered in a few days. I didn't even take a big dump. It just clogged up. I had to get an emergency plunger and since that move I make sure there is one close by during moves.
I actually think about plungers quite a bit. If I notice someone has a sink plunger instead of a toilet plunger, I immediately and forever judge the shit out of them.
One of the first things I did when my gf and I started dating was buy her one, so that when I finally got comfortable enough to drop dueces at her place I wouldn't be up shit creek without a plunger