suspensions are served and thus need to be excluded from future checks

This is exactly why I don't bother to check or report. 99% of the time when I checked, the answer from support was "already served".

Unfortunately, there are a number of reasons automatic checking doesn't work. Steam's API is often garbage, games get removed/revoked, suspensions are served and thus need to be excluded from future checks, some violations are harder to spot for various other reasons, etc.

None of that is any excuse for not doing it automatically.