The workflow require type two times to show the available devices

[faketerigo]

step 1: The first time it will reach the web search step of the alfred, step 2: and the second time will show a list, step 3: after the devices is switched it will go to step one again

[Zaidcrowe]

I had this on my M1 after upgrading to Montery.

If you open the 'output' script filter in alfred, you can add the following

repeat until exists tab group 1 of window "Sound"
end repeat

under

tell application "System Events" to tell process "System Preferences"

Here's the entire output scriptfilter code incase usefull:

tell application "System Preferences"
	reveal anchor "output" of pane id "com.apple.preference.sound"
end tell


set deviceselectedXML to ""


tell application "System Events" to tell process "System Preferences"

	repeat until exists tab group 1 of window "Sound"
	end repeat

	repeat with i from 1 to the count of rows of table 1 of scroll area 1 of tab group 1 of window 1
		if exists (text field 1 of row i of table 1 of scroll area 1 of tab group 1 of window 1) then
			
			set deviceselected to the value of text field 1 of row i of table 1 of scroll area 1 of tab group 1 of window 1
			set deviceselectedXML to deviceselectedXML & "<item uid='" & deviceselected & "' arg='" & deviceselected & "' valid='YES' autocomplete='" & deviceselected & "'><title>" & deviceselected & "</title>"
			
			if (selected of row i of table 1 of scroll area 1 of tab group 1 of window 1) then
				set deviceselectedXML to deviceselectedXML & "<subtitle> Currently selected </subtitle>"
			end if
			set deviceselectedXML to deviceselectedXML & "<icon>output.png</icon> </item>"
		end if
		
	end repeat
end tell
set deviceselectedXML to "cat << EOB 
<?xml version='1.0'?> <items> " & deviceselectedXML & "</items> 
EOB"

do shell script deviceselectedXML