But say, the OP had gone and told the therapist "Hey, I'm concerned that I'm just not exercising and I'm lolling around on the couch or just sitting around all day".

And, if the therapist responded by not ringing the alarm bells and simply said "Hey, try to do stuff in moderation etc" (exactly, as they've said to the weed stuff), it wouldn't be seen as such a concern.

So, I do think the disproportionate alarm at the response is really related to how one thinks of weed and not separate from it.