Describing topics as User error, Program feature, Idea, or Bug is a judgement call as virtually all posts could be classified as any of these depending on the desired outcome.
I think we all want to Lubos to use his time efficiently but put different priorities on program functionality which is important to us.
From the guide Clear transactions in Suspense account
Manager is designed to preserve information rather than reject incorrect entries. But when anything is in your Suspense account, your records and reports are almost certainly wrong.
Whenever the suspense account or Starting balance equity have non zero values, that is actually a good idea as there have been about 10 topics in the last year due to user not realising this. A prominent banner on the summary page is probably the simplest solution.
The converse approach is to make the program appear to work even better in this error state. The disadvantage of which is it will tend to confused even more people.
Should Lubos prefer this direction, I suspect the underlying issue is transactions are assumed to be in the base currency when incompletely entered (and while in that state they are temporary stored/shown in the suspense or Starting balance equity). Which would explain the problems encountered in these threads