*https://blockchain.info/charts/avg-confirmation-time?timespa...
*https://blockchain.info/charts/avg-confirmation-time?timespa...
It's a form of survivor bias because you never see or think about the technically-complex failures, or "not-successes", like the Tamagatchi, Laser disc, WebTV, Webvan, etc. I mean, how come none of it's proponents compare Bitcoin to the Segway? Sure, you can say we have hoverboards now but those are not Segway, the same way Eth and Monero are not Bitcoin.
In the same way, Eth and Monero are further iterations of Bitcoin.
Bitcoin, Eth, and Monero are all implementations of blockchain. Bitcoin is technically inferior to Eth, Monero, even Dogecoin, but that doesn't stop GP and others from comparing it to the internet's success in saying that Bitcoin is destined for similar success.
Blockchain size and confirmation times are two entirely different things.
The length of the chain can affect processing power and bandwidth, as each block contains all previous blocks.