It seems pretty clear to me that they definitely intended to include breast jiggle physics at some level, and they decided that that was something that should be decided by the community. That would indicate to most casual readers that it’s a priority for the devs. If they didn’t realize that would strike a chord with both the pro-sexualization and anti-sexualization people, they weren’t thinking at all.
This looks like a cutesy, cozy game that probably shouldn’t even have jiggle physics. If they really wanted it in there, they should have just done it and said nothing. The “nasty people” they don’t want to “attract” would have appreciated the jiggle, and everyone else would have just ignored it.
The devs brought it into the spotlight and it got talked about. I’m not surprised at that outcome at all.