I'd say it's closer to the Dicto Simpliciter fallacy. Essentially, starting with an unqualified statement and extrapolating to a more general statement. Examples would be things like "Exercise is good, so everyone should exercise" or "Online members of a group said something, so all members of that group agree" or "High BMI is unhealthy, so all people with high BMI are unhealthy"

https://www.palomar.edu/users/bthompson/Secundum%20Quid.html#:~:text=Dicto%20Simpliciter%20%2D%20Secundum%20Quid&text=Description%3A,rule%20should%20be%20rejected%20altogether.