TA works to a certain extent with any market that has fear and greed property since it measures trend/sentiment. However, it needs valid and adequate data. Perhaps only BTC that has sufficient data samples (when bots/manipulators are OFF).

I am not a trader, so I only occasionally see a trader's youtube channel for entertainment and education purpose. For example https://www.youtube.com/channel/UCnJjRjmthxPCoQaAL44tR6g
Sometimes he guessed right, and sometimes not
It is a good channel anyway.

I agree that if you only use TA for your investment decision, you will get rekt.