I don't think they're as small as you're saying. There have been multiple well documented incidents with 737 MAX that have not been with the A320. Maybe you think it's small enough to not worry about, said incidents are enough for me to want to avoid that aircraft entirely. Absolute risk is certainly still low, but I'll take the safer in comparative risk any day there.
Paying attention to planes and risks of other forms of transport are not mutually exclusive.
The 737 MAX has crashed 2 times in 800,000 flights - >100M passengers.
The industry average for plane crashes is 1 in 16.7M flights. The 737 MAX is 1 in 400,000.
This seems a lot worse than most people are making it out to be on here. It's close to 2 orders of magnitude worse than the industry average.
And if I'm doing my math right, you have a higher chance of dying getting aboard a 737 MAX than you do getting in your car (obviously, you're going to travel A LOT farther on the MAX than you would on an average car trip - so per mile it's still significantly safer than a car).
Paying attention to planes and risks of other forms of transport are not mutually exclusive.