So, Goku merely saying he's super-excited certainly shows how one-note his characterisation is in Super. Remember back in Z where he had more interesting responses such as telling Kuririn he was both scared and excited about fighting Cell, or before that when he wondered why he felt so calm when arriving on Namek, or before that when he surprised Piccolo by actually being scared and not excited by the thought of fighting those stronger than Raditz? Yeah, I miss when Goku was a character and not a caricature.
Gohan and Piccolo still have enough Ki to put up a fight against Saganbo, yet it was easier for Galu to sense the humans than them?
Also, Tenshinhan is amazed Goku oneshotted someone they struggled with despite that being the status-quo ever since Piccolo Daimao. It'd make sense if the humans had indeed made great gains from their training, yet Yamcha says that "Even we were able to beat weaklings like them (the other prisoners)," so it doesn't seem like the humans' power increased much.
Goku's training gains are enough that his PSSB self can now fight against someone far stronger than a Gohan far stronger than the one who stalemated Kefla, which probably makes current PSSB Goku way stronger than ToP SSBE Vegeta. Not that surprising when considering the training he had access to. Also unsurprising was Goku now being able to use Ultra Instinct Sign at will. Not bad, considering most of the training and the start of the arc were building up to him being able to use the technique on demand, but it obviously carries with it the problem of how much power creep will come to the series in order to make things an escalation, unless Toyotaro and Toriyama realise the trappings of this and make magic and abilities far more relevant.
Not the worst chapter in the arc (though you'd need to hit an all time low to earn that title). It still had some really dumb moments, but overall had more aspects of merit than a lot of others in the arc.