When it comes to the standing tumbling progression, it does make sense. level 3 is standing multiple handsprings. then you jump to level four and you see whip-layouts because kids didn't learn to properly set into their tucks in standing tumbling, and they need layouts for the higher bracket ranges. jumping from 3-4-5 has always had a point of contention around the ways of skipping and lumping together tumbling skills (3-4 in standing and 4-5 in running basically). Just because your kid was coached right in her progression and can do it, along with having the natural talent for it, doesn't mean that all kids are/do...most kids are pushed to progress before they perfect just to max out difficulty and we see those teams that shouldn't be at worlds because they get outscored by j5 teams and everyone comes on here to complain about them.
ETA: this is a way of trying to bring together that standard of progressing along all the scoresheet at the same time, and because it hasn't been in place for years, kids are going to get stuck in less than desirable situations, but in the long run, it's better for the sport, and that's what we need to remind ourselves of...we all want safety and betterment. We can't complain because it sucks for a couple years for a few kids while needed changes are implemented.