What is the value of audience participation in art?

F.T. Marinetti "declared film to be the supreme art because it embraced all other art forms," but is it truly valuable to embrace all art forms at once? Some argue that the brain is more engaged by traditional forms of art because the imagination is forced to fill in for what is lacking in the other senses. In this view, the written word is the most engaging art form. A successful poem forces the audience to become engaged in all their senses without any direct stimulus. Take E.A. Poe's "The Bells" for example:

Hear the sledges with the bells -
Silver bells!
What a world of merriment their melody foretells!
How they tinkle, tinkle, tinkle,
In the icy air of night!
While the stars that oversprinkle
All the heavens, seem to twinkle
With a crystalline delight;
Keeping time, time, time,
In a sort of Runic rhyme,
To the tintinnabulation that so musically wells
From the bells, bells, bells, bells,
Bells, bells, bells -
From the jingling and the tinkling of the bells.

In contrast, films are often used as a form of relaxation because the viewer can simply sit back and let the stimuli take over their system by force, absorbing their attention but not requiring engagement.
More forms of stimuli do not necessarily equal fuller engagement or audience participation.

Allan Kaprow wrote, "The line between art and life should be kept as fluid, and perhaps indistinct, as possible." If the line between art and life is really that indistinct, is it really art? Shouldn't there be a distinction? If art is life and vice versa, what's the point of having a separate word for art? While it is important to expand our horizons, there should be criteria for a piece to be considered art. I've seen many "modern art" pieces that aren't actually art. For example, one piece was a string of light bulbs thrown randomly on the floor. That's not art. It's bulls*&t. A blank piece of canvas is not art. It's a piece of cloth. I can pull metaphors out of thin air, but that doesn't make them meaningful.