Of course, and it's important to think for yourself. However, he actually says to slow down and say "excuse me" to pedestrians. The shouting is for traffic, and he says it's better not to, and to concentrate on evasive action instead.
"Resentment" is a fair description of the response I got when I used to use a bell (I accept, naturally, that other people's experiences might be completely different) , to which I would add "ridicule" as a common response.
A bell isn't just a way to say 'excuse me', it's a tool to warn people in advance. People that are not necessarily in your way but to warn those who may step / cycle / drive out into your way. It's 'look at me' or 'please don't step out on to the road' -- and to be saying those things in the city centre at least, you'd nearly be shouting them. A bell, I find is far more polite that shouting.
You can get both resentment and ridicule without a bell and by using the most polite manner by trying to say excuse me on cycle tracks (not shared used paths) in the Phoenix Park and elsewhere. The resentment and ridicule has little to do with use of a bell and a lot to do with the idea 'why should I give way to a bicycle! A cyclist on bicycle!' -- Whether that's on a cycle track in a park or jaywalking at a crossing in the city centre, and the idea can stem from anything from bicycles are just toys to cyclists are unimportant or a bicycle can't hurt me.
It's worth saying the bells on my bikes, to different degrees, do work on traffic as well (a Dublin Bike bell makes hardly any noise compared to them). Also that's not to say I would fully rely on them to warn traffic but they are just one of many tools. And before anybody says it's safer just to stop, I'm well able to break and ring a bell at the same time.