IMO being "trans" (it's not very clear what it means, and sometimes it seems to mean things that are factually impossible, so I'm using that to cover a range of possibilities) should be seen for what it is, a belief system that is not based on fact. It should be treated like having a belief in astrology, or like claiming to be any other category that you can't be (different age from what you are, different ethnicity from what you are, different height from what you are etc).
So what that means is I don't wish anyone with those beliefs any harm, and I don't think they should be discriminated against or persecuted at all. I'm quite happy for people to have their own beliefs and I understand that conditions like body or sex dysphoria are hard to deal with and deciding/believing or just pretending you're the opposite sex may help. If they stuck to indulging that belief on a personal level or with like-minded others, left me out of it and it didn't affect me, I would not be so rude as to challenge someone's incorrect or unevidenced belief, just as I don't with astrology, religion etc.
For me to respect trans people in this way, they would have to stay in their lane as regards their actual sex - no demanding access to opposite sex spaces, sports etc (because those things only affect one sex in a really bad way, don't they? That's because biological sex is a reality.) :"Trans" should mean "I want to consider myself the opposite sex but I do understand I'm not as far as other people are concerned and the opposite sex's rights and spaces do not belong to me". This is the evidence-based position. There's no evidence anyone can change sex, or ever has, and there's plenty of evidence that trans-identifying people, especially males, statistically align with the behaviour and criminality levels of their biological sex, so TW absolutely should not be entitled to things that are for women only.
I think it should be perfectly reasonable for those who don't share the belief to say so and not to go along with the pretence if they don't want to. I also think you can only consider yourself "trans" if you are very deeply sexist, as it means you believe there is something other than your body that makes you the opposite sex, and the only thing that can be is gender stereotypes. It means you uphold gender stereotypes, and as a feminist I don't, so I wouldn't have a whole lot of time for people who think that way - unless they are the very realistic, honest type of trans person who doesn't deny their real sex or require everyone else to indulge them (they do exist and I recognise that).
It should be OK to say "X identifies as a TW, that's their business but I don't agree, don't like their sexism and don't like being cosplayed". Why not, when we can say that about the same situation when it applies to race, etc?
The only reason many feminists, LGB people and others are now vocally opposed to trans ideology is that an unevidenced belief is being imposed on us and is being used to take things away from us (women's sports medals, women's safety from males in their own spaces, lesbians having male-free spaces and dating, people being allowed to speak the truth, healthcare professionals being allowed to understand and talk about what kind of body they're trying to heal, schools being able to teach biological reality, children and teens being able to explore identity without commitment or permanent harm, etc.) If it wasn't being imposed on us - as well as being backed up by abuse and violent threats from extremist activists - this wouldn't have happened. We've had trans for decades and most of us had nothing against trans people at all up until it started being used as a sexist, homophobic, ideological power play that disadvantages and harms women, children, lesbians and gays.