Is there a way to disable models?

Yes Edit>Preferences>Autopilot is there for all the other models but denoise, and it is badly needed as using the filmstrip preview to turn off denoise is error prone, buggy and painful if it works at all.

Copy all Settings copies the parameters which is not the same thing as choosing a model.

See this request Port the spreadsheet style interface that gigapixel had as a UI option to restore the prior functionality of copying setting subsets to subset of photos.