I can empathize with feeling hurt/upset about being called a wrong name that you *really* don't want to be called, because I'm a married young lady who's taken my husband's last name, and I STILL get referred to with the wrong last name in medical situations sometimes, which is really upsetting to me (yes, my last name is LEGALLY changed to my married last name - my insurance is still being updated, though, and I do ask the medical offices to note my correct name). for example: I got a voicemail referring to me with the wrong last name, I called that medical office and clearly stated my correct name, they called me back and left a voicemail STILL referring to me with the wrong last name (same person from the first voicemail), so I called again and talked to them and set it right.
I previously had 3 different last names. 2 were last names that actually belonged to me, the other 1 was, sadly, my previous "legal" last name and was only used in situations where legal names would've been required, but it wasn't my real/ancestral birth last name, and it really bothered me, and I still hate to hear and see it in reference to myself, now even moreso, because I love my husband and my married last name and what it means that I get to have his last name.)
I will say that if the person in the original video's name isn't legally changed yet - or the patient file still shows up with their old name, then the pharmacist was probably just going by what they saw in the patient file, BUT the pharmacist could've been more empathetic toward them ("oh, I didn't know, I just saw what was in the file. I can make a note in the file for you."). I say this as a conservative (I'm not a republican, btw, both the republican and democrat parties are corrupt): I'm so glad I don't watch/follow these "shock and provoke, virtue-signaling, unempathetic, 'get rekt' republicans" anymore. it's not conservativism. I still don't like the anger and lack of empathy. I'm reminded of Lauren Southern's virtue-signaling of "bUt I'm nOt gOiNg tO bE a pRofEssiONaL viCtiM aBoUt iT". it doesn't make you look cool. guess what? human beings have emotions. it's not a crime to vent about stuff that's hurt, bothered, and/or upset you.