Hi,

I think you might have misunderstood a bit. Metronome is not a new blockchain, but rides ontop of EVMs. It is not app swapping, it's not an app platform. MET (the coin itself) is what is ported between chains. Metronome is a new cryptocurrency that is designed to endure through its principle design goals of self-governance (without undue founder influence), reliability (with a highly predictable supply and issuance schedule), and portability (so that MET owners can move their MET to compatible blockchains for whatever reason they desire).

I highly encourage you to read the Owner's Manual - there's an entire section devoted to motivations: https://github.com/autonomoussoftware/documentation/blob/master/owners_manual/owners_manual.md