Over time, does the quality degrade or does it hold?

The mechanics don't degrade: the text delay and platform reliability are software, not human motivation. What ages is the script: your services change, your prices move, a competitor shows up — and a frozen knowledge base gives outdated answers. Hence the monthly report and qualification statistics: a drop in the qualification rate is the signal of a script that needs refreshing. Script coaching stays available for that, at any point in the account's life.