I don’t think this is wrong but I think it’s because the circumstances around the two tend to be quite different.
I don’t remember the exact statistic so I’m not going to quote it, but a significant proportion of suicides are the result of impulsive decisions rather than a deliberate plan. They aren’t carefully considered, their impacts aren’t discussed with other people, there is no deep dive into the reasoning behind the choice, and a lot of them happen as a result of easy accessibility of things that can quickly cause death (ahem firearms*) because the person isn’t slowed down by having to figure out how to do it (and thus having enough time pass for the impulse to fade, which can then allow them to go get the help they need).
MAiD/human euthanasia, by and large, is not an impulsive decision. It’s the result of someone making an active and deliberate choice for themselves over a significant length of time with the input of medical professionals and (most likely) loved ones, to determine that the person is of sound mind and able to conclude that it’s the right choice for them personally.
In a lot of ways the tragedy around both situations is the glaring indictment of physical and mental healthcare in a lot of parts of the globe, and the resources available (or, more accurately, not available) if you aren’t neurotypical and able-bodied, but that by no means makes Caroline’s choice a tragedy as a consequence.
*In high school I lost a schoolmate (the younger cousin of my brother’s best friend) due to suicide by firearm. My comment above is not said to be flippant. I say this because he might still be here if he hadn’t had ready access to firearms in that moment and his parents have dedicated themselves to the causes of gun control and gun safety in the decade-plus since.