Yes, many individuals in the Brazilian Jiu-Jitsu community have chosen to step away from gi training for various reasons, including injury prevention, comfort, and personal preference. Training without the gi (often referred to as "no-gi" training) involves grappling without the traditional uniform, which can be more comfortable for some practitioners and can reduce the risk of certain types of injuries that might occur when training with the gi.
In gi training, the uniform can provide grips and handles that allow for a different set of techniques and strategies. However, it can also lead to strain on joints and tendons due to the increased friction and leverage that comes from gripping the fabric. No-gi training tends to be faster-paced and more focused on positional control and quick transitions.