I literally just said:
Only if Bitcoin remains predominant.
Yes, Bitcoin still uses proof-of-work. That's because Bitcoin is itself a fossil, its userbase and developers have consciously decided to not adopt new blockchain technologies and remain locked in the current protocol. Other blockchains have continued moving on. Alas, Bitcoin has name recognition and inertia on its side, which will keep it around for a long time. But at some point I expect its obsolescence will catch up with it and overcome that inertia.