I can't speak to this particular elephant rescue camp but I've been to others in SEA and lived for a long tim in an area with elephant/human villages. Asian elephants who grow up around humans like to work, they usually have the same handler for most of their lives (sometimes they outlive their mahouts which is very sad for them) - and they are super smart animals. Working gives them exercise, a purpose and keeps them busy - which is much better for everyone than a bored and frustrated elephant, believe me. A lot of the camps in Thailand were set up after logging along the border was made illegal and the elephants/mahouts lost their livelihoods and were begging on the streets of large towns and cities. Believe me, the elephants are much better off at the camps.
This episode and this whole season have been making me tired. Rachel has been growing on me, but this week she lost my good will. Please. Read. The. Clue.