Walter welcome to the Router Forums.
A CNC machine is just one more tool to use, just like a table saw, bandsaw, jointer, etc. A CNC could be used to make half-lap joints but would not be the best choice of tools to use.
As Stick pointed out a "table saw and a dado blade is the fastest way...
shoulder plane for finite fit...". This would also be my choice.
Your BRAIN Is The Most Important Power Tool In Your Shop. Turn It On Before You Turn On Any Other Power Tool.
A Disability Is Only A Disability If You Let It Be One