It is something that does make people confused and upset.
As an artist myself I feel that the groups take away spotlight for solo artists. I am in an art group and been in a few before. I will admit the goal in the groups is to get as much requests you can get. While the larger art group gets recognized. Smaller art groups or any other artist is left in the dust with no requests. As I may say some art groups are helpful and generally help people and its member involving art and other things, you are provided with friendship. In the end a motive for a group or artist can, and mostly be bad. The key to some leaders and some members is…“We are now filled with competition!” This for example is motivation to be the best. Which is okay to certain limits. When stealing requests or just invading the customer is past the limit and is now plain rude.
Sorry for this long paragraph but yeah that is my thoughts.