Would Siddhartha Gautama have agreed with modern forms of Buddhism?

Siddhartha Gautama accepted as its close disciples some secular. They had the same chance to gain enlightenment, without practicing rituals, and without believing in everything he said or did. Looking at the big picture can show that Siddhartha's truth doesn't hide behind idealism or practicing specific rituals. By it's nature it is everywhere, and it's findable in everything. The Truth could be in any ritual or practice. **So isn't it out of context to create massive religious groups like we can see in modern Buddhism ?** **Isn't it against the nature itself of the truth, to mass share a specific view of it ?**