Fireman and policeman in English are also not offensive because they aren’t referring to gender or sex.
Human - Group
Humans - Collective Individuals
Man - Individual
Men - Collective Individuals (Non-sexed)
Not to be conflated with
Men - Collective (Sex Male)
Women - Collective (Sex Female)
Wo - Female, men - collective individuals (non-sexed).
Keep in mind these are all traditional definitions and were constructed before sex and gender were determined to be separate and before intersex was a classification.
We now often conflate those in common English with human and man and person being interchangeable. As man (individual) with man (sex). And many others conflate sex and gender.
Firefighters - Group
Fireman - Firefighting Individual
Firemen - Firefighting Collective (Non-sexed)
Police - Group
Policeman - Policing Individual
Policemen - Policing Collective (Non-sexed)
The arguments for removing gender from professions is based on the misapprehension that the professions were ever related to gender and as a result mass illiteracy has made it an “issue”.
This is language theory not pandering or looking to excuse the use of deliberately discriminatory language or racial epithets, but a master class on understanding the nuance between offensive language and inoffensive language and the damage that disingenuously taking offense at inoffensive language does in stifling legitimate discussion of the topics and the disingenuous censorship of legitimate inoffensive language at the behest of a failed education system.
Case in point.