ghadilligood teams move up in order to provide less skilled teams with a meaningfully competitive environment for them to compete, develop, and have fun in.
The "competitive environment" is barely changed at all with sandbagging teams involved outside of what number is in the standings or who wins in playoffs (usually).
What's being discussed is subjective and if someone for example thinks that low invite is advanced and top advanced is low invite then this post offers absolutely nothing because its taking for granted the premise that these are teams that do not belong and that the top of one div ought to be worse than the bottom of the next div.
In contrast while more sandbag-friendly posts obviously also have their biases about where to "draw the line" so to speak, when we talk about the benefits conferred on a div by having stronger opponents, easier transitions upwards with a more overlapping skill gradient between divs, less friction for returning to the game or making teams in general we're making arguments that hold true regardless of where you subjectively draw the line.
I'd care a lot less about the topic if the outcomes of what kind of sandbag action were taken was also subjective but they're not. On one side you have rules actively killing teams whereas the other side has what exactly? The boogeyman of some god team dropping two divs as an analogy for a mid-invite player dropping a div to mainclass on a friend team? Am I supposed to care?