I agree. I assure you that the catcher didnt set up for a high change-up, a high sinker, and then a second high changeup. That pitcher was making mistakes in the zone, which is worse than making mistakes out of the zone even though the walk junkies will prob disagree with that.
Burying a pitch to a righty from a lefty would have to be either a curve or change. If they are throwing sweepers/sliders/cutters to a righty from a lefty, usually they are trying to back-door those. A curveball can start away and in the zone but wind up buried, ditto changeup....But sliders/sweepers/cutters, when they are low and away to righties from a lefty, thats an easy pitch to lay off. Coming in on a righty with a sweeper is so dangerous. I wouldnt do it ahead in the count cuz its so easy to overspin the sweeper and if you are coming in on a righty from a lefty, in an 0-2 count or a 1-2 count , you are asking to plunk the batter, on an 80 mph pitch, so thats a bail out. If the count is 3-1 a sweep across the zone, back foot sweeper is a better pitch (vs in a 1-2 count).
But those high changeups are no doubt meatballs. The high sinker , maybe not as much, because usually a high sinker just becomes more of a 2 seam when its left up. Kind of like the Mitch Hepburn "an escalator can never be broken, it can only become stairs" joke. I honestly dont always know the difference between a 2 seamer and a sinker, unless its like Brandon Webbs obvious sinker. They have the same grip and arm action. But like Bello's...you could call that pitch either a 2 seamer or a sinker depending on what mood you are in.
But a high chnage is different. THere is a yo-yo string pull effect to a good change, and that doesnt happen when its left up. Same thing with sliders. When too high the break is heavily reduced. There are very few pitches you want to leave up like that, and none of them are soft. 2-seamers, 4-seamers, and cutters really.