Well, I am suprised a little bit, I must say. Good for you (?), I'd expect more...
Or just to express politely that they are not much interested in lower-balance accounts... 🙂 (If you have 5M somewhere, you'll probably do not care much about 1,8k per year as you'll take it simply as︀ the costs of the business.)
BTW, from what I recall, LLB is the only LI︁ bank that is fine with transactional banking on wealth management accounts. Others are not and︂ they charge you as ~100 CHF per transaction. Hence this 40 CHF is a little︃ bit suprising to me, too; I think I witnessed less. (But it did not concern︄ 500k account, to be honest.)