Teaching queer perspectives on all facets of life is very important, sexuality and gender is only a small part of it.
And, if we're going to be pedantic about this, being LGBT is only a 'queering' of gender and sexuality because heterosexuality and 'family values' are oppressively enforced, globally. Stop thinking only within western contexts.
For example queerness in America and queerness and India are two completely different conversations involving a queering of two completely different sets of social and cultural relationship/marital norms. There is not one 'gay' monolith, but conservatives have created a bogeyman out of thin air.
Queerness, and oppression, are two sides of the same coin. They do not exist without the other, for if there were no oppressive societal externalities there would be no queering.
You could very much argue that flat earth, and alternative sciences like it, are 'queer' science, and conspiracy theories 'queer' politics, because they subvert the status-quo of what is widely socially accepted, and you will find that there is soft social pressures everywhere that see this enforced. I mean, try getting a job as a scientist, policymaker, or teacher, if you're 'out' as a flat earther? Doors will be shut on your face, that is what it means to be queer.
Thinking that queerness starts and stops inside the bedroom is small-minded.