You don't actually need a copy of the whole blockchain!
You only need the recent part of it that deals with the bitcoins you own or receiving or storing.
Right now, everyone stores the whole thing because the blockchain is still pretty small.
But as time goes on, it is likely that the average user won't hold the whole blockchain on only large servers or "bank"-like entities will keep the whole thing.
I would agree. blockchain is still growing and improving over time, and bitcoin is not flawed technology like mentioned about blockchain its growing and improving slowly but surely, it has its downs but every cryptocurrency does