Does quality of data correlate with the tool used to add it?

I feel that the quality of Open Street Map data depends on the tool (editor) that the users use. My conjecture is, some tools make it hard to add correct data:

• Don't check for basic mistakes (e.g. unconnected ways)
• Don't remind the user to add various frequently-used data fields (e.g. changeset description)
• Make it possible to degrade (e.g. delete) data inadvertently

Is this justified?

If yes, what can we do about it (for example, list common errors for common tools, and how to avoid them)?