funhaver1998now whats genius about that is the simplicity. i've been watching some cooking documentaries and something that marco pierre white said that stuck out for me was 'you have to realize that mother nature is the true master and you are just the chef' in the context of making complex food. the best chefs are those that make good food in the most simple way possible. now if we apply that to art, the best artists are those that say what they want to say simply, and what better than one simple stroke of yellow, charged with emotion and imagery against a blank canvas. colours, especially yellow being a primary colour, are the most simple tools that an artist has, the same way a chef uses a potato and a writer uses language, and to say something while respecting these things, in its most purist form, is genius.
The point is that when you go to a restaurant and you're given a soup which consists solely of boiled water, you would not think it's delicious; you'd leave without paying because you can just put the kettle on at home. There is a difference between minimalism and non-existence. It's also not impressive to tell someone something in a vague and laborious manner which requires all sorts of background checking, that's just failing at getting your message across.
In the end, meaning is different for everyone(everything in the universe means fuck all until you decide for yourself that it has meaning), but within the framework of our society, if you put something on display or up for sale in a public place, you do have to try to communicate with that very same public in their framework. And even if you fail to do so, people might still appreciate your artistry without comprehending your message. But there is very little artistry in one stroke of paint or monochrome surface. This is also why someone can think a painting is ugly, but still appreciate it. With some modern art, if you don't understand the message there also isn't any artistry to fall back on that you could still appreciate. Hence the strong reactions people have to it compared to older art.
This doesn't mean that you shouldn't enjoy a monochrome surface. You should just be cognisant of the reason why the vast majority of the public is not in a position to enjoy it and perhaps shouldn't be expected to put in the effort to be able to at the very least appreciate, let alone enjoy, what the artist was trying to communicate in a highly abstract and arguably incompetent manner.