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Hello John WDCX.
I did read the whole article, but found it in one turn contradictory and in another imprecise.
At the very opening sentence it clearly says: “The first time a class E rig is put into operation, you MUST use an oscilloscope to ensure everything is working correctly.”
There is no room in the opening statement for a later exception.
In the later section TUNING WITHOUT AN OSCILLOSCOPE it repeats the same claim made at the beginning: “Once you have verified your transmitter operation WITH AN OSCILLOSCOPE, you should be able to tune using the drain current meter.” That is contradictory, because it doesn’t really tell us how to tune without an oscilloscope.
The final section, USING AN EFFICIENCY METER, is lacking in detail, and although it hints at the possibility of having a “one meter serves all solution,” it doesn’t actually say that an oscilloscope will thereafter NOT be needed for initial setup.