Yes and no.
Yes in the sense that prior bad behavior shouldn’t automatically invalidate everything a person posts.
But no in the sense that when a person’s behavior shows a clear pattern you shouldn’t isolate each infraction. That’s just idiotic. If this is the tenth time a dog has bitten someone you don’t treat it the same way you would if it was the first time.
In the case of HBDC, there is a history of good contributions once upon a time, and people lament the situation we have where those have been dispensed with and replaced by total garbage.
When I was an administrator on Wikipedia I often had to make judgement calls about whether a person was a net positive or a net negative to the project, and I permanently blocked a lot of folks. Sometimes it was a no-brainer and sometimes it was a very difficult call to make. But it was part of my responsibility to do so. Mods here have a similar responsibility. When HDBC was last suspended, there was a sincere plea to return to their previous ways and be a valuable member of the community again. I don’t have much hope of that happening.