"Using someone’s pronouns doesn’t harm us."
On the contrary.
There is plenty of harm individually and collectively for female people in using demanded language rather than accurate language. The use of a male person's demanded language hides their male sex category meaning that anyone who needs to know that male person's sex category does not have that information when it is important to them.
This is also very important in making sure that children understand which sex a person is so that when they report incidents to adults, they have the correct information.
There is a red flag connected to 'He came into the girl's toilets' vs 'She came into the girl's toilets'. Or 'she shared my room on the school trip' with 'he shared my room on the school trip'.
Then there are the historical activist campaigns that successfully convinced decision makers to change / create policy that harmed female people. A direct example of this is a male athlete called Rachel McKinnon / Veronica Ivy who successfully presented to sports committees (I believe he also presented to the IOC) and had sport's policy changed. He directly used the fact that people used female language for him so therefore it was cruel to exclude him from the female sport category.
There are numerous others using the same argument for different policy committees etc.
The clarity that was achieved when Naomi Cunningham used correct sex language in the case where a male doctor was using the female single sex communal changing room was significant. One of Dr Upton's own arguments was that 'everyone treated me like I was female and used female language' (my paraphrase). He also stated clearly in the case that he was 'female' as if this was a material fact.
How is it at all respectful for any male person to claim the usage of female language while female people are left with no language that uniquely describes their group? That is what I call misogyny.
By what means is any male person a female person? Please explain the process very clearly so that I and others understand how any male person can be a female person.
"It shows basic respect regardless of your wider views."
Again, what other group's philosophical belief do you, personally, act as if you believe in your language when that belief is not based in material reality?
You have decided what respect means to you, yet, you don't respect others to have a valid reason for disagreeing with you. You don't respect others to choose to believe in material reality and prioritise it while you then demand through your personal judgement of others that they prioritise what is not material reality because of your personal beliefs.