On Monero's exchange delisting - This isn't about fungibility problems with Monero, it's about regulatory pressure. Exchanges don't delist Monero because it doesn't work; they delist it because it works too well. The privacy features that make Monero truly fungible are precisely what regulators find threatening.

The "coinjoin-like" comparison misses the mark completely. Monero's privacy isn't an optional add-on like coinjoin for Bitcoin - it's baked into the protocol with ring signatures, stealth addresses, and RingCT. These work together to ensure that every transaction is private by default. You can't "reject" Monero transactions for being private the same way some exchanges might flag coinjoined Bitcoin - with Monero, privacy is the default state.

Regarding scaling and fees - yes, all blockchains face scaling challenges, but Monero's dynamic block size actually adapts to network demand, unlike Bitcoin's fixed size that necessitated Lightning. Monero's fees have historically remained much lower during congestion periods, making it more practical for everyday use.

As for Lightning Network being "remarkable" - it's an interesting solution but introduces its own problems with channel management, liquidity constraints, and routing complexities. Monero's approach of handling transactions on-chain with built-in privacy and reasonable fees is simply more straightforward.