Anyway, a mere suggestion to turn notifications off will be likely as ignored as the spammy notifications themselves. That are a lot of assumptions that people used to phone technology make about what is logical, easy, intuitive or obvious that do not hold for people who lived for 50 years before mobile phones existed
This is unrelated to your comment, but I saw a past submission of yours https://news.ycombinator.com/item?id=12276956 and was wondering how your experience went (as I am now in the same position), but did not see an email in your profile to contact you.
Anyway, my experience went terribly! lol
Not much learning though. I stayed there for only 5 or 6 weeks because of a very toxic work environment, with a workaholic culture and a very micromanaging boss that did not trust me (not sure why I was hired in the first place). After that, I decided to study fulltime to learn to code and now I am a happy frontend developer.
But if you want to email me with details of your position, I do think I can help you.
My parents (~75yo) have Androids and they essentially ignore all notifications. They allowed notifications on a few clickbaity news websites that spam then with tens of notifications a day. So they just don't know what it is and ignore them all, including potential relevant ones (like Whatsapp messages from family).
I, as a creator of a web app that would benefit a lot from notifications, would appreciate Apple adding push notifications to web. But I understand their choice