That is true, stuff like efuses, security patches (well minus version 1.0.X - 3.0.X Since it has that major security flaw), and cartridges have been changed drastically I think to improve security on the Switch, but then again it makes me skeptical that a full security ban system to detect CFW or homebrew users is already working on the switch considering that a "test" was recently launched on the 3ds and no longer really continuing. But I could be wrong.
I don't think its something to start immedeatly worrying about considering there have been many other consoles deemed impossible to hack because of the security and they were hacked anyway. It may be possible to downgrade a Nintendo Switch at some point or not be banned for playing online but idk, I could be wrong about that.