Err, no. Bots (in the context of 1.6 at least) are not tied to a Steam account and can't earn anything.

Anyway, GP's is not my impression of 1.6 back in the day: lots of bot servers back then too.

Not bot in the traditional sense of the game's AI, but bots as in accounts loaded up with the bare basics to join games and AFK - They level the account, get the steam free drops, and then sell that drop + the account eventually.

There is decent money in it. Back in CSGO I had a VM running two full bot servers at a run cost of ~$3.xx per week to earn ~$30 fully automated.