That paper specifically concludes that despite all that, there is no reason to even look into whether fluoridation in drinking water might be a problem because there has clearly been no corollary deleterious effect. So, knowing what it would look like if it was a problem, was enough to know that it isn’t even close enough to warrant checking how close it is. The highest reported extremes of exposure already didn’t cause issue, so there is certainly no cause for concern at normal levels.
Basically, normal levels are so far below potential risky levels, that they aren’t even concerned of accidental overexposure due to mistakes or accidents. They concluded they had literally zero concern…
So linking that paper isn’t really supporting your opinion.
Careful with alarm fatigue. It’s unfortunately something your brain does without your permission. If you ever find setting lots of alarms stops being helpful, that is likely what happened. Basically, since you will end up brushing off a decent portion of those alarms as you are either still on task or don’t need to be on task yet “this time”, your brain will slowly think of those alarms as less important, no matter how important you want them to still be.
It can help to set as many different alarm sounds as possible. Sometimes, that can make it feel like each alarm is different, and they won’t all be lumped into the same category in your subconscious.