According to Wikipedia, ubiquity is the property of being present anywhere and everywhere. In simpler words, ubiquitous indicates something you can find anywhere. For example, cell phones are common nowadays. So, one can say that cell phones have become ubiquitous in modern culture.
Contrarily, something that is challenging to understand or comprehend is “confusing.” It can describe events, beliefs, or ideas that are puzzling or confusing and imply a lack of clarity or assurance. For instance, someone without a background in the field would find a complicated scientific theory confusing.
There is no intrinsic connection between these concepts. But they might be used in conjunction to indicate a situation where something commonplace is also puzzling. For instance, specific technology is ubiquitous as well as confusing if it is widely used but challenging for individuals to comprehend or operate.