But is it art?

Into Aberdeen today to meet up with an old friend from university days. We met at the Art Gallery for coffee and something to eat.
We had a fine chat and catch up on various subjects such as Assisted Dying - we both feel very strongly that it should be a choice for those terminally ill and in pain and discomfort - about politicians and the royal family, and more serious topics!!!
The photo is of four of the “paintings” we looked at.
Top left is “Death of Lakes and Rivers” and it invites us to think of problems that rivers etc face apparently
In the top right one the artist painted the canvas blue then used turpentine to create the white streaks
In bottom left is called Night Sky or something like that
And bottom right is “ In The Gulf They Dream of Sea and Ice” which is about young men going to the Gulf Wars
I know which one I like best!