Monero is a shitcoin for a few reasons, but mostly because it does not have anything close to the network effect that Bitcoin has.

It certainly cannot be Bitcoin’s properties that make us value it. I can fork Bitcoin right now, give it a different name, and nobody would buy it. It’s the story, and that story will fall apart without privacy.

The technology that Monero uses is not shitcoinery at all*, and Bitcoin should steal that technology with BIP300. The existence of Monero breaks the 21 million rule, especially when used as a fake L2. It also encourages economic activity on Monero nodes, and we need that activity on economic Bitcoin nodes.

*If anyone thinks the privacy Monero uses is shitcoinery, they should know that Satoshi was already developing it in 2010

https://bitcointalk.org/index.php?topic=770.msg9074#msg9074