Rethinking Bitcoin 'dominance' at 51% — A misleading metric?

cointelegraph.com:

Bitcoin's (BTC) market dominance has traditionally been viewed as a key indicator of its market strength. Currently, the metric is at a multi-year high above 51%. 

However, a closer analysis suggests that the concept of "Bitcoin dominance" might not be as informative as it seems, especially when considering the broader dynamics of the cryptocurrency market.

The term "Bitcoin dominance" refers to BTC's share of the total market capitalization of all cryptocurrencies. While on the surface, it seems to reflect Bitcoin's market strength, this metric largely represents the trading activity between Bitcoin and Ether (ETH), the second-biggest cryptocurrency and the largest altcoin by market cap. 

This dynamic can distort the perceived dominance of Bitcoin, especially when major shifts occur within the ETH/BTC trading pair.

Related: Ethereum losing streak vs. Bitcoin hits 15 months — Can ETH price reverse course?

That said, ETH's "dominance" or share of the crypto market has remained relatively stable for the past few years around 17% — while the seemingly inverse relationship between BTC.D and ETH/BTC is clearly visible in the chart below. 

Adding complexity to the interpretation of Bitcoin's dominance is the role of stablecoins like Tether (USDT), the second-biggest "altcoin" by market dominance at around 6.3% today.

USDT's market cap growth is often not a direct result of cryptocurrency market activity but rather an influx of what can be termed "sidelined" capital—funds that are essentially in dollars and often waiting to enter the market sooner or later.

Therefore, the increasing market cap of stablecoins like USDT doesn't necessarily reflect an investment in cryptocurrencies, but rather the preparedness of investors to engage