Bitcoin is not totally lacking fungibility, as there are ways to make the coins more fungible, but it needs more developer support. Wasabi wallet has coinjoin s

Bitcoin is not totally lacking fungibility, as there are ways to make the coins more fungible, but it needs more developer support. Wasabi wallet has coinjoin support, although it's not easy to use, not automated, doesn't work on mobile phone and expensive for most people. Also of course exchanges try to AML-KYC them out, as govermnets are trying to fight it. Implementing Schnorr signatures was a great way to get closer to fungibility improvements, as it paves the path for signature batching, which can make CoinJoin cheaper than a single transaction, and will change the incentives towards making Bitcoin fungible by default for every user.