"Vandalism is the action involving deliberate destruction of or damage to public or private property." (https://en.wikipedia.org/wiki/Vandalism)
What happened here was never intended to be vandalism, nor was it about "stopping the woke sjw culture war." The posts in question were carefully and consistently retagged using "rule63" for characters presented as a different gender than in the original comic. The goal was to make them less susceptible to mass downvoting while still preserving most of their accessibility.
Despite that, the changes were reverted, and a ban was issued without any prior warning or explanation. If this had truly been vandalism, you would expect clearly malicious behavior - such as adding offensive tags or stripping posts of all useful tagging - which did not occur here.
It's also unclear how the "transtuck" tag is relevant. Beyond sounding out of place, this board doesn't even use standard tags like "1boy" or "1girl" that are common everywhere else. In practice, the tag has often been applied inconsistently, including to content that doesn’t depict transgender characters at all (such as nonbinary headcanons), which only adds to the problem.
More importantly, drawing distinctions like this can unintentionally make the artwork a target for the very behavior you claim to be addressing. At a broader level, it raises the question: does it really matter whether a character is perceived as a cis woman or a trans woman? It shouldn't. It's worth reconsidering why such a distinction is being emphasized through tagging in the first place.
This site is a collaborative effort, so let's all collaborate together instead of jumping at each other's throats over not getting to have nice things because of mass downvoters.