If centralization destroys bitcoin, will centralization inevitably destroy all cryptocurrency?
Cryptocurrency is not necessarily an end state, it can also be a process: I have enjoyed a great increase of freedom in my life through cryptocurrency, and I don't place a great emphasis on which particular crypto has done it in which year. In my own thinking, the "spirit of silver" moved to Bitcoin, and later to Monero, and may move on. Each move any more, is not a disruptive but incremental change - I still own more value in physical silver than Monero, for instance. All the previous stages of innovation serve as backups should the latest one end up "being forked".
The cutting edge cryptography will be tried in the high end projects first, and the trend towards
fragmentation of the virtual assets sphere is also there. 2 years' slaughter has not killed any even remotely legit alts, for instance. This is an indication that in the future, you can own a myriad of virtual assets secured or unsecured by cryptography; accessed publicly, pseudo- or anonymously; and allocate your portfolio between them without friction.