Comment by notepad0x90

you mean how everyone built on top of ipv4 and can't abandon it now, even after 3 decades of it's replacement being available and more secure? Or how everyone uses TLS now, not because it's the best way but because like 'Reticulum' it became the best bloated compromise?

General purpose systems aren't always ideal, they're just ideal to gain mass adaption. For applications who target smaller sets of users and prioritize security guarantees, being able to fix bugs at any 'layer' and not depend on external entities is crucial. How I'd wish they'd even use their own Layer 2/3 stack if it were practical.