At least you’re consistent; this is the way the debuff was before. Getting kicked has given the debuff since Cata, almost 15 years ago.
I’m sorry you had a bad experience, but being kicked has no moral structure behind it. It’s a simple majority vote. Good groups will use it for good reasons and bad groups will use it for bad reasons, and blizzard stays out of the social interaction.
Being kicked, for whatever reason, gives the debuff because our community demonstrated very early that it is a problem when there is a benefit to incentivize getting kicked rather than just leave. Once that benefit, avoiding the debuff, was removed, the system functioned generally well, with the occasional collateral damage of people like you, being kicked for a reason we can generally agree is a bad by people behaving poorly.
Short story here is: it needs to work this way, but it’s unfortunate when people get the debuff for stuff like this. Try not to take it personally.