That's a good point and I think you are right there.
Great thing about Back tension releases is
1) They are cheap
2) They are simple
3) They are easier to use correctly from the start
4) Can be shot exactly the same way as clicker expansion
Triggers can be too, but I believe is more difficult to learn. Again I go back to my wife on this one, she shot recurve for 10 years and jumped into compound with a back tension. Carefully watching her and she uses both exactly the same way.
Here is an excellent release to start with
Zenith X-Cel Plus
Should be around 35 euro.