There was a discussion
here in 2018. It seems like in the QC universe (or the people that we see anyway), the word "robot" has taken on a new meaning and most people using the word just use that new meaning without regard to its origin. Kind of like how the word "atom" originally meant an indivisible particle, but when chemists realized that what they'd been calling atoms were actually divisible, they didn't pick a new word but rather added a new definition for "atom".* Early AI researchers probably were used to using the term "robot" and when its original meaning no longer really applied, the word was such a habit that a new meaning developed.
However, the original meaning of "robot" is still around in QC as shown in
comic 2754. May uses the term for herself and other AIs in other comics, so I think it's fair to say she doesn't view the word as inherently offensive, but she can use either definition.
Here are some samples uses of the word "robot" that I found when browsing through recent comics:
May: "free socialized robot titties..." (4402), "Robots with buttholes" (4349)
Sam: "How come a robot needs underwear" (4413)
Rene: "I wonder what getting texted feels like for robots." (4357)
Beepatrice: "Robot College" (4352), "You're a robot." (4221), "a wealthy old human who loved robots" (4209)
Jeremy: "robot martial arts" (4316)
Millefeuille: "robot hand" (4218) -- but this was about Clinton's hand, so that's more of the older meaning
Roko: "Giant robot bear" (4210), "Grandpa Robots" (4200)
Dora: "robot lady from last night" (4170)
Tai: "tall robot lady" (4159)
* This is a bad analogy since atoms don't get to decide for themselves what word should describe them, but I'm bad at coming up with analogies so it's the best I could think of.