I agree with your intent and desire, but the fact is that this problem _keeps happening,_ and we can't fix it by advocating "well, just do alerts better." There's a lot of cultural inertia at a lot of places that leads to creating too many, too low-signal alerts, and fixing that across an entire company -- or, hell, industry -- is a magnificently tall order.

However, installing a tool to specifically reign in those garbage noisy alerts is a potentially easy, significant win for the time and mental health of on-call engineers.

I mean, it sounds like you can then afterwards go in and identify the alerts that are just noise, and having that data means you can take action. Maybe contact the teams that are writing the noisiest alerts, or prepare some data-driven engineering standards for the company, whatever. But that still falls into "fix the culture", which is famously hard to do by fiat.