There is subtle, yet important, difference between questioning something and asking questions. Your initial comment questioned the need for a community group for LGBTQ+ engineers - which is unnecessary, unwelcome and unproductive.
Ask instead, “what can I do to help to make LGBTQ+ engineers feel as welcome outside if this newly created community group as inside of it. That is asking a question and not to question its need.
You, and me, both men, and maybe you, at least be, being straight has no right to question the need for a LGBTQ+ group.
It is like…. Imagine you are sitting by a square in a town and painting the scenary, going about your business. Along comes some stranger and walking up to to and not in a particular rude way, but in a presumptive way starting to give you feedback on your painting and paintings technique. This is just strange, that person doesn’t know anything about why you are sitting there painting, that person doesn’t know what you want to express with your specific painting and style. In order words: that stranger is not entitled to question your painting and should not do it.
Because of freedom of speech thar person may still chose to express opionions about your painting, but is only risking hurting your feelings and come across as annoying while doing so.
I’m a white, heterosexual, educated cis male without any serious illness or physical limitations, from Sweden, one of the richest countries in the world: I check my privilage and I realize I have no right to question any one in any minority group at all. I will let everyone paint whatever painting they feel like, without saying a word.