There are a large number of diptwats, and even people who seem smart, who fuck around trading in and out of bitcoin based on their dumb ideas in regards to various manipulated metrics like bitcoin dominance, and so yeah, through bitcoin's history there has been a lot of people trying to sound smart in their descriptions of how their perceptions of how "bitcoin dominance" has changed over the years or during certain "seasons."
I agree with your statement, although I believe that the act of buying and selling by traders is a personal matter, but universally it brings harmful results. However, since there is freedom in the field of trading, traders should analyze other effective metrics for market analysis, such as on-chain data, fundamental analysis, trading volume, liquidity, and others, in addition to Bitcoin dominance, to make informed decisions.