Perhaps, but RSI is still a good indicator to watch. The daily chart shows an obvious downtrend now, Monero is in a corrective phase of a bull market. Lower lows and lower highs. The RSI can give a clue as to trend change. Once a bottom is in place and XMR/BTC price clearly is rising again just buy on a pullback. I find charts shorter than one day are not good for my trading, too much noise. I don't care what the USD price is. The time to buy Monero is when XMR/BTC is in an uptrend.
I would like to add: We are very near to the "end of the downtrend in XMR/BTC", one can play around near the bottom, but Monero has always shown sudden peaks in the past. This can mean for hodlers and those who value the XMR technology above the other cryptos the loss of precious XMR. For traders it is "just" missed profit.
Although the XMR/USD pair is not traded with high volume I would not discard it, we move there in the range between (tighter) Bollinger bands on the daily chart and right now we could see an upswing again. Do not forget that the XMR bearish trend is also just a result of BTC going up, while it remains stable in fiat. Combine this with the low RSI on BTC/XMR coming soon and the support lines on the daily chart and you have a better picture then with RSI alone.
I would also like to add that some updates are also around the corner as is the coinbase implementation of XMR which cannot be calculated into the price as it will influence the price additionally to the speculation once it is done. The XMR community shows continous and accelerating growth, the numbers of reddit subscribers is just one of them. Also I think a lot of XMR investors have realized after the recent pump of ETH where the price of XMR could be in already 1 or 2 years, clearly above 50 or 100 USD, so more and more are long term hodling.
I just know when the bottom is in I will change all my ETH to XMR as could others too.