This could be true for the M1, but is unlikely to be true for the M2/M1X/M1Pro or whatever they call it. There are some limitations: lack of PCI-E lanes, lack

This could be true for the M1, but is unlikely to be true for the M2/M1X/M1Pro or whatever they call it. There are some limitations: lack of PCI-E lanes, lack of off-package RAM support, lack of user-replaceable RAM support, lack of discrete graphics support, lack of Thunderbolt 4 support. These are all essentially non-performance features of the chips that need to be developed to bring them up to feature parity with the Intel chips. This generation happens to have carefully bypassed the need for those features, a smart move by Apple for the first release, but later releases for the higher end MacBook Pros, the iMac/iMac Pro, and the Mac Pro, will need most/all of these features, and those will likely take significant time to work into their architecture.