For some reason, the author chose to imitate a "strikethrough" text effect by following each letter with "U+0336 COMBINING LONG STROKE OVERLAY", rather than just using the <s> HTML element.
They survive format changes. If copied and used as plain text, the meaning does not suddenly change from a joke to an ominous "interrogation consultation room".
It certainly doesn't survive everywhere. It fails or renders differently in various applications I've just tested such as pdf renderers, tts, messaging, different browsers, terminals, and at least the one email client I tested it in.
When failing it appears either as "interrogation-" or some form of "interrog̶a̶t̶i̶o̶n̶-" or as "i-n-t-e-r-r-o-g-a-t-i-o-n-"
Unlucky? Crappy tools? I just pasted it into several places on my Android phone, including browsers and renaming a file, and it rendered correctly each time.
