But I think the "it's been 15 years" argument is hollow. Clearly Bitcoin has an every-growing community of dedicated holders, and Bitcoin has surely increased the general skepticism of the monetary system.
I think you are conflating a speculative vehicle with an inflation hedge. Bitcoin is surely great for both depending on your timeline, but you strawman it a bit by appealing to the lowest common denominator who doesn't get and doesn't hold it.
It's provably scarce, it's highly locally securable (big job, but possible for most) and as a scarce asset, it's relatively cheap and easy to transfer. Yes, it failed as money (on the base layer), and that was its stated goal, but I'll readily give credit where it is due.