Leviticus 18:22
King James
22Thou shalt not lie with mankind, as with womankind: it is abomination
New Living Translation
22“Do not practice homosexuality, having sex with another man as with a woman. It is a detestable sin.
So, they are technically right about the usage of the word “homosexual”, they are totally wrong about the Bible not proscribing homosexual practices.
Romans in the new testament also covers it quite well.
Those that argue the bible (in both the new and old testaments) do not claim homosexuality is a sin are just liars, period.