If you swap out the term ‘currency’ for ‘technology’ with crypto you start to see where it’s value is at. Most (the serious non-meme ones) of the ‘currencies’ are not intending to replace cash or national currencies but to provide a technological blockchain for ‘events’ to take place, such as safer funds transactions - one of them is solely focussed on eradicating black market transactions for example. Others focus on contracts and various other confidential transactions.
The reason people think cryptocurrency is dead before it gets off the ground is because they think it’s trying to replace the USD or GBP. There’ll always be a requirement for local currency but the world is moving on from exchanges and silly charges for everything now.
As a side though, it’s unregulated and until it is regulated it’s still risk and gambling essentially. The reason the likes of Tesla invest in Bitcoin is because it’s no-lose (at least they thought that until they realised how Bitcoin was mined unethically and they shat themselves thinking the US Gov would pull their grants) because profit on Bitcoin would remain out of the clutches of the federal taxman as long as it remained in Bitcoin, and any losses were able to be written off against taxable revenue.
Or something like that.
Are you holding any Bitcoin? I'm tempted to get on it in a small way, but I don't like punting on something I don't really understand.