Do you know why humans are as advanced as we are? It’s because we can learn from each other and build on what people before us have done. A label helps you connect with people who have the same struggles and learn what strategies they used to cope and live a fulfilling life. It’s a way to avoid having to reinvent the wheel.
How do you find the people with the same struggles as you without some common banner to look for? And just naming symptoms without some root cause is probably not going to be helpful. Treating leg pain from a broken bone is different than treating leg pain from a bad cramp. Similar for a lot of social/mental challenges.