Since I am at least a pot & a half a day drinker of coffee, and a 5 year vet, I have some experience.
When talking coffee, we all say coffee but we don't all mean the same thing. Coffee to me is regular coffee with cream. My uncle says coffee and it means black. My coworker says coffee and it is this whipped cream covered sundae in a huge cup with enough sugar to kill a diabetic.
The first thing to debunk is that coffee is diuretic. Caffeine is diuretic yes, but the amount of liquid present in a cup of coffee is more than enough to offset that. It will not dehydrate you.
When coffee is said to be acidic, that is actually in reference to the flavor; not the pH level. Our own saliva is more acidic than coffee and our stomach is far more acidic than that. And our stomach is producing hydrochloric acid all the time. Like, as soon as they close the stomach acid is back in production.
https://www.thekitchn.com/whats-the-deal-with-acid-in-coffee-224482
The only things to truly be cognizant of is that caffeine, regardless of its source, attaches to the same receptors that Vitamin D and Calcium bond to. So if you take supplements for those, don't take them with coffee. The other thing is that coffee can stimulate the bowels. Some people have always been like this, a good strong cup can send me to the bathroom relatively quick. That was before surgery and still happens today. Some people never had that issue before and now they do. It's not uncommon.