I don't know how others use LLMs, but once I find the answer to something I'm stuck on I do not tell the LLM that it's fixed. This was a problem in forums as well but I think even fewer people are going to give that feedback to a chatbot

The problem that you worked out is only really useful if it can be recreated and validated, which in many cases it can be by using an LLM to build the same system and write tests that confirm the failure and the fix. Your response telling the model that its answer worked is more helpful for measuring your level of engagement, not so much for evaluating the solution.

You can also turn off the feature to allow ChatGPT to learn from your interactions. Not many people do but those that do would also starve OpenAI for information assume they respect that setting