We all know all medications have side effects. Please actually read the posts you are responding to.
The question is, what are the chances that over time, new, unexpected, serious side effects could emerge?
Maybe a large number of people who take it gets dementia. Maybe longer-term use will be shown to lead to osteoporosis in a significant number.
Or something else which is serious enough to change the balance of harms when considering whether to take the drugs.
"Everything has side effects" is not an answer. A number of weight loss drugs over the years feel out of use due to side effects or other issues. Sometimes because users no longer consider the trade off reasonable. In other cases, it's because whatever the users think, the medical establishment decided that it wasn't appropriate - being addicted to speed for example isn't a good trade off for losing weight.
Some people seem keen to dismiss the idea that significant risks to medications and treatments can emerge later. If it's been tested they are sure it must be ok.
My post was essentially saying - this is a drug with a system wide effect on the body, that people will take for a long period of time - I think those are the kinds of drugs where serious side effects do sometimes unexpectedly emerge.