My UTD Essentials covers the following:
Helium and standard gassed
Minimum decompression and deep stops
Gas consumption and rock bottom calculations.
Keep in mind that we are talking about an agency that teaches helium in strictly non technical and purely recreational capacity.
A lot of things that they call Recreational 3 may seem technical diving to the outside world but it is recreational in their texts. The line between recreational and technical is not the way it exists everywhere else.
You are right. To us, there is no hard line between recreational and technical diving. It is a continuum being one is the extension of the other.