To be clear from the start, I do not completely disagree with this statement of yours.
However, I believe it should be given much more thought. There are types of products which less maintenance than others (i.e. sound vs plugins). This has the potential to lead to very unfair situation where 1 seller has, let’s say 5 ‘issues’ and fixes them all (100% trust), while others have 50 ‘issues’ on a much more complex product, but only solve 40 of them, in the same time interval (80% trust). At a glance, they both should achieve the same 100% trust level, but you can’t ignore the fact that you’d be putting apples and oranges in the same category. Sure, they’re both fruits, but other than that, there should be some differences instead of a clear ‘one-fits-all’ solution which would be doomed to fail, in my opinion.