Fiat mindset. You don't need more units in the system to make it work better. Bitcoins are divisable down to a 100 millionth, which leaves heaps of granularity. Even if all bitcoins apart from 100,000 were lost, that would be enough. 

 Once those bitcoins/sats are in etf custardy/storage they ain’t coming back out is more my point. Nothing to do with it working better, it works just fine. 

 Like I said, even if the Bitcoin's were effectively burnt or lost, this makes no difference on the useability of the remaining Bitcoin.