The word “porneia” is derived from “pornos”, the Greek word for a male prostitute, just for the record.
And any church that welcomes a heterosexual fornicator is not conservative, bottom line.
Porneia is not derived from pornos, which is merely the masculine form of the feminine noun for prostitute, porneia. The feminine form is much more commonly used, for obvious reasons, since in the ancient, as well as modern world, female prostitutes greatly outnumbered male ones.
I am not a Greek scholar, but I think it highly unlikely that the modern word fornication derives ultimately from pornos rather than porneia, the much more common noun form.