Fantasy Art contra Fantastic Art

Fantastic art is a loosely defined art genre. Fantasy art is generally defined as not fine art at all. Defined by the experts, of course.

But for everyone who loves fantasy, who loves Lord of the Rings, Hieronymus Bosch, SF literature, Breughel, the pre-RaphaeliteBrotherhood, Salvador Dali, Rene Magritte and many others there is no such distinction between high art and low art, between fantastic art or fantasy art
.
Why is Salvador Dali an artist of fantastic art but not fantasy art?
What precisely is the difference between fantastic art and fantasy art?
Why are dragons, wizards, fairies and other fantastical and mythical creatures so different from robots, cyberspace and devils?
Are devils more or less realistic than dragons?
Is this only an academic dispute?

Here we will not draw any distinction between the two. I would just love to make a bridge between the two supposedly different genres.

Fantasy was, is and always will be an integral part of art.
Fantasy is an integral part of our life, too. Mankind has always dreamed, dreams now, and will continue to dream about something mystical, dark, different, divine and magical. Without dreams, imagination and fantasy our life will be nothing and we will be nowhere. Is this the truth or is this merely a statement? My statement without foundation?